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-rw-r--r--html/001help.cc.html12
-rw-r--r--html/011load.cc.html6
-rw-r--r--html/020run.cc.html4
-rw-r--r--html/021check_instruction.cc.html2
-rw-r--r--html/022arithmetic.cc.html50
-rw-r--r--html/023boolean.cc.html6
-rw-r--r--html/024jump.cc.html6
-rw-r--r--html/025compare.cc.html36
-rw-r--r--html/026call.cc.html2
-rw-r--r--html/027call_ingredient.cc.html4
-rw-r--r--html/028call_reply.cc.html4
-rw-r--r--html/029tools.cc.html4
-rw-r--r--html/030container.cc.html26
-rw-r--r--html/031merge.cc.html14
-rw-r--r--html/032array.cc.html16
-rw-r--r--html/033exclusive_container.cc.html31
-rw-r--r--html/034address.cc.html4
-rw-r--r--html/035lookup.cc.html44
-rw-r--r--html/036refcount.cc.html1
-rw-r--r--html/039location_array.cc.html2
-rw-r--r--html/042name.cc.html6
-rw-r--r--html/050scenario.cc.html40
-rw-r--r--html/053recipe_header.cc.html8
-rw-r--r--html/054static_dispatch.cc.html2
-rw-r--r--html/056shape_shifting_recipe.cc.html4
-rw-r--r--html/057immutable.cc.html12
-rw-r--r--html/061text.mu.html4
-rw-r--r--html/062rewrite_stash.cc.html86
-rw-r--r--html/065duplex_list.mu.html (renamed from html/066duplex_list.mu.html)2
-rw-r--r--html/066stream.mu.html111
-rw-r--r--html/067random.cc.html (renamed from html/065random.cc.html)12
-rw-r--r--html/067stream.mu.html75
-rw-r--r--html/068random.mu.html92
-rw-r--r--html/069hash.cc.html (renamed from html/068hash.cc.html)6
-rw-r--r--html/070table.mu.html (renamed from html/069table.mu.html)2
-rw-r--r--html/071recipe.cc.html (renamed from html/070recipe.cc.html)8
-rw-r--r--html/072scheduler.cc.html (renamed from html/071scheduler.cc.html)62
-rw-r--r--html/073wait.cc.html (renamed from html/072wait.cc.html)10
-rw-r--r--html/074deep_copy.cc.html (renamed from html/073deep_copy.cc.html)8
-rw-r--r--html/075channel.mu.html (renamed from html/074channel.mu.html)2
-rw-r--r--html/080display.cc.html4
-rw-r--r--html/082scenario_screen.cc.html17
-rw-r--r--html/091run_interactive.cc.html4
-rw-r--r--html/092persist.cc.html4
-rw-r--r--html/lambda-to-mu.mu.html605
-rw-r--r--index.html21
46 files changed, 1162 insertions, 319 deletions
diff --git a/html/001help.cc.html b/html/001help.cc.html
index d6b21301..09f1e4c9 100644
--- a/html/001help.cc.html
+++ b/html/001help.cc.html
@@ -46,6 +46,10 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color
        &lt;&lt; <span class="Constant">&quot;  mu test</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span>
        &lt;&lt; <span class="Constant">&quot;To load files and then run all tests:</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span>
        &lt;&lt; <span class="Constant">&quot;  mu test file1.mu file2.mu ...</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span>
+       &lt;&lt; <span class="Constant">&quot;To load files and run only the tests in explicitly loaded files (for apps):</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span>
+       &lt;&lt; <span class="Constant">&quot;  mu --test-only-app test file1.mu file2.mu ...</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span>
+       &lt;&lt; <span class="Constant">&quot;'--test-only-app' must come before all other args</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span>
+       &lt;&lt; <span class="Constant">&quot;'test' must come before all other args except '--test-only-app'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span>
        &lt;&lt; <span class="Constant">&quot;To load all files with a numeric prefix in a directory:</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span>
        &lt;&lt; <span class="Constant">&quot;  mu directory1</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span>
        &lt;&lt; <span class="Constant">&quot;You can test directories just like files.</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span>
@@ -229,6 +233,14 @@ feenableexcept<span class="Delimiter">(</span>FE_OVERFLOW | FE_UNDERFLOW<span cl
   <span class="Identifier">return</span> in &amp;&amp; !in<span class="Delimiter">.</span>eof<span class="Delimiter">();</span>
 <span class="Delimiter">}</span>
 
+<span class="SalientComment">////: A hack to support faster debugging.</span>
+<span class="Delimiter">:(before &quot;End Globals&quot;)</span>
+<span class="Normal">bool</span> Test_only_app = <span class="Constant">false</span><span class="Delimiter">;</span>
+<span class="Delimiter">:(before &quot;End Commandline Parsing&quot;)</span>
+<span class="Normal">if</span> <span class="Delimiter">(</span>argc &gt; <span class="Constant">1</span> &amp;&amp; is_equal<span class="Delimiter">(</span>argv[<span class="Constant">1</span>]<span class="Delimiter">,</span> <span class="Constant">&quot;--test-only-app&quot;</span><span class="Delimiter">))</span> <span class="Delimiter">{</span>
+  Test_only_app = <span class="Constant">true</span><span class="Delimiter">;</span>  --argc<span class="Delimiter">;</span>  ++argv<span class="Delimiter">;</span>
+<span class="Delimiter">}</span>
+
 <span class="Delimiter">:(before &quot;End Includes&quot;)</span>
 <span class="PreProc">#include </span><span class="Constant">&lt;assert.h&gt;</span>
 
diff --git a/html/011load.cc.html b/html/011load.cc.html
index 8720745d..184151d4 100644
--- a/html/011load.cc.html
+++ b/html/011load.cc.html
@@ -106,12 +106,10 @@ vector&lt;recipe_ordinal&gt; load<span class="Delimiter">(</span>istream&amp; in
   skip_whitespace_and_comments<span class="Delimiter">(</span>in<span class="Delimiter">);</span>  <span class="Comment">// permit trailing comment after '['</span>
   instruction curr<span class="Delimiter">;</span>
   <span class="Normal">while</span> <span class="Delimiter">(</span>next_instruction<span class="Delimiter">(</span>in<span class="Delimiter">,</span> &amp;curr<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+    curr<span class="Delimiter">.</span>original_string = to_original_string<span class="Delimiter">(</span>curr<span class="Delimiter">);</span>
     <span class="Comment">// End Rewrite Instruction(curr, recipe result)</span>
     trace<span class="Delimiter">(</span><span class="Constant">9992</span><span class="Delimiter">,</span> <span class="Constant">&quot;load&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;after rewriting: &quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>curr<span class="Delimiter">)</span> &lt;&lt; end<span class="Delimiter">();</span>
-    <span class="Normal">if</span> <span class="Delimiter">(</span>!curr<span class="Delimiter">.</span>is_empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
-      curr<span class="Delimiter">.</span>original_string = to_string<span class="Delimiter">(</span>curr<span class="Delimiter">);</span>
-      result<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>curr<span class="Delimiter">);</span>
-    <span class="Delimiter">}</span>
+    <span class="Normal">if</span> <span class="Delimiter">(</span>!curr<span class="Delimiter">.</span>is_empty<span class="Delimiter">())</span> result<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>curr<span class="Delimiter">);</span>
   <span class="Delimiter">}</span>
 <span class="Delimiter">}</span>
 
diff --git a/html/020run.cc.html b/html/020run.cc.html
index 6674be65..77f00c93 100644
--- a/html/020run.cc.html
+++ b/html/020run.cc.html
@@ -190,8 +190,8 @@ load_file_or_directory<span class="Delimiter">(</span><span class="Constant">&qu
   <span class="Normal">while</span> <span class="Delimiter">(</span>argc &gt; <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
     <span class="Normal">if</span> <span class="Delimiter">(</span>string<span class="Delimiter">(</span>*argv<span class="Delimiter">)</span> == <span class="Constant">&quot;--&quot;</span><span class="Delimiter">)</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
     load_file_or_directory<span class="Delimiter">(</span>*argv<span class="Delimiter">);</span>
-    argv++<span class="Delimiter">;</span>
-    argc--<span class="Delimiter">;</span>
+    --argc<span class="Delimiter">;</span>
+    ++argv<span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>Run_tests<span class="Delimiter">)</span> Recipe<span class="Delimiter">.</span>erase<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;main&quot;</span><span class="Delimiter">));</span>
 <span class="Delimiter">}</span>
diff --git a/html/021check_instruction.cc.html b/html/021check_instruction.cc.html
index 841c0cc9..fc6ef270 100644
--- a/html/021check_instruction.cc.html
+++ b/html/021check_instruction.cc.html
@@ -56,7 +56,7 @@ Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</spa
       <span class="Comment">// Primitive Recipe Checks</span>
       <span class="Normal">case</span> COPY: <span class="Delimiter">{</span>
         <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> != SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-          raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;ingredients and products should match in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+          raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;ingredients and products should match in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
           <span class="Identifier">break</span><span class="Delimiter">;</span>
         <span class="Delimiter">}</span>
         <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
diff --git a/html/022arithmetic.cc.html b/html/022arithmetic.cc.html
index 1ac31170..510b5a4c 100644
--- a/html/022arithmetic.cc.html
+++ b/html/022arithmetic.cc.html
@@ -48,7 +48,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'add' yields exactly one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'add' yields exactly one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -120,7 +120,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'subtract' yields exactly one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'subtract' yields exactly one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -176,7 +176,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'multiply' yields exactly one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'multiply' yields exactly one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -233,7 +233,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'divide' yields exactly one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'divide' yields exactly one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -281,15 +281,15 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> DIVIDE_WITH_REMAINDER: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'divide-with-remainder' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'divide-with-remainder' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> || !is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'divide-with-remainder' requires number ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'divide-with-remainder' requires number ingredients, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'divide-with-remainder' yields two products in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'divide-with-remainder' yields two products in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
@@ -365,15 +365,15 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> SHIFT_LEFT: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'shift-left' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'shift-left' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> || !is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'shift-left' requires number ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'shift-left' requires number ingredients, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'shift-left' yields one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'shift-left' yields one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -436,15 +436,15 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> SHIFT_RIGHT: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'shift-right' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'shift-right' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> || !is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'shift-right' requires number ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'shift-right' requires number ingredients, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'shift-right' yields one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'shift-right' yields one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -507,15 +507,15 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> AND_BITS: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'and-bits' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'and-bits' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> || !is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'and-bits' requires number ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'and-bits' requires number ingredients, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'and-bits' yields one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'and-bits' yields one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -565,15 +565,15 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> OR_BITS: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'or-bits' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'or-bits' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> || !is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'or-bits' requires number ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'or-bits' requires number ingredients, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'or-bits' yields one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'or-bits' yields one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -617,15 +617,15 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> XOR_BITS: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'xor-bits' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'xor-bits' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> || !is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'xor-bits' requires number ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'xor-bits' requires number ingredients, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'xor-bits' yields one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'xor-bits' yields one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -669,15 +669,15 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> FLIP_BITS: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'flip-bits' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'flip-bits' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'flip-bits' requires a number ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'flip-bits' requires a number ingredient, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'flip-bits' yields one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'flip-bits' yields one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
diff --git a/html/023boolean.cc.html b/html/023boolean.cc.html
index 9036dfa3..b561cf93 100644
--- a/html/023boolean.cc.html
+++ b/html/023boolean.cc.html
@@ -47,7 +47,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'and' yields exactly one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'and' yields exactly one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_boolean<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -105,7 +105,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'or' yields exactly one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'or' yields exactly one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_boolean<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -157,7 +157,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> NOT: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> != SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; <span class="Constant">&quot;ingredients and products should match in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; <span class="Constant">&quot;ingredients and products should match in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
diff --git a/html/024jump.cc.html b/html/024jump.cc.html
index 10b9040e..9dc3662e 100644
--- a/html/024jump.cc.html
+++ b/html/024jump.cc.html
@@ -51,7 +51,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> JUMP: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'jump' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'jump' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_literal<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -90,7 +90,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> JUMP_IF: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'jump-if' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'jump-if' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_scalar<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -143,7 +143,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> JUMP_UNLESS: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'jump-unless' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'jump-unless' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_scalar<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
diff --git a/html/025compare.cc.html b/html/025compare.cc.html
index 37c7c8c5..10c3a0d8 100644
--- a/html/025compare.cc.html
+++ b/html/025compare.cc.html
@@ -41,18 +41,18 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> EQUAL: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> &lt;= <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'equal' needs at least two ingredients to compare in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'equal' needs at least two ingredients to compare in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">const</span> reagent&amp; exemplar = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
   <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Comment">/*</span><span class="Comment">skip exemplar</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
     <span class="Normal">if</span> <span class="Delimiter">(</span>!types_match<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> exemplar<span class="Delimiter">)</span> &amp;&amp; !types_match<span class="Delimiter">(</span>exemplar<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-      raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'equal' expects ingredients to be all of the same type, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+      raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'equal' expects ingredients to be all of the same type, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
       <span class="Identifier">goto</span> finish_checking_instruction<span class="Delimiter">;</span>
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'equal' yields exactly one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'equal' yields exactly one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_boolean<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -115,16 +115,16 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> NOT_EQUAL: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'equal' needs two ingredients to compare in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'equal' needs two ingredients to compare in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">const</span> reagent&amp; exemplar = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!types_match<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">),</span> exemplar<span class="Delimiter">)</span> &amp;&amp; !types_match<span class="Delimiter">(</span>exemplar<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'equal' expects ingredients to be all of the same type, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'equal' expects ingredients to be all of the same type, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">goto</span> finish_checking_instruction<span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'equal' yields exactly one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'equal' yields exactly one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_boolean<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -169,7 +169,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> GREATER_THAN: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> &lt;= <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'greater-than' needs at least two ingredients to compare in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'greater-than' needs at least two ingredients to compare in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
@@ -179,7 +179,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'greater-than' yields exactly one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'greater-than' yields exactly one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_boolean<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -236,7 +236,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> LESSER_THAN: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> &lt;= <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'lesser-than' needs at least two ingredients to compare in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'lesser-than' needs at least two ingredients to compare in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
@@ -246,7 +246,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'lesser-than' yields exactly one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'lesser-than' yields exactly one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_boolean<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -303,7 +303,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> GREATER_OR_EQUAL: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> &lt;= <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'greater-or-equal' needs at least two ingredients to compare in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'greater-or-equal' needs at least two ingredients to compare in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
@@ -313,7 +313,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'greater-or-equal' yields exactly one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'greater-or-equal' yields exactly one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_boolean<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -378,7 +378,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> LESSER_OR_EQUAL: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> &lt;= <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'lesser-or-equal' needs at least two ingredients to compare in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'lesser-or-equal' needs at least two ingredients to compare in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
@@ -388,7 +388,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'greater-or-equal' yields exactly one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'greater-or-equal' yields exactly one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_boolean<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -453,7 +453,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> MAX: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> &lt;= <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'max' needs at least two ingredients to compare in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'max' needs at least two ingredients to compare in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
@@ -463,7 +463,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'max' yields exactly one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'max' yields exactly one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -492,7 +492,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> MIN: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> &lt;= <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'min' needs at least two ingredients to compare in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'min' needs at least two ingredients to compare in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
@@ -502,7 +502,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> &gt; <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'min' yields exactly one product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'min' yields exactly one product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; !is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
diff --git a/html/026call.cc.html b/html/026call.cc.html
index 83224e28..6acdb8a6 100644
--- a/html/026call.cc.html
+++ b/html/026call.cc.html
@@ -132,7 +132,7 @@ routine::routine<span class="Delimiter">(</span>recipe_ordinal r<span class="Del
 <span class="Delimiter">:(after &quot;Defined Recipe Checks&quot;)</span>
 <span class="Comment">// not a primitive; check that it's present in the book of recipes</span>
 <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>operation<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-  raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;undefined operation in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+  raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;undefined operation in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
   <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span class="Delimiter">}</span>
 <span class="Delimiter">:(replace{} &quot;default:&quot; following &quot;End Primitive Recipe Implementations&quot;)</span>
diff --git a/html/027call_ingredient.cc.html b/html/027call_ingredient.cc.html
index 4757e0c2..3f159981 100644
--- a/html/027call_ingredient.cc.html
+++ b/html/027call_ingredient.cc.html
@@ -76,7 +76,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> NEXT_INGREDIENT: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'next-ingredient' didn't expect any ingredients in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'next-ingredient' didn't expect any ingredients in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Identifier">break</span><span class="Delimiter">;</span>
@@ -175,7 +175,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> INGREDIENT: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'ingredient' expects exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'ingredient' expects exactly one ingredient, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_literal<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">))</span> &amp;&amp; !is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
diff --git a/html/028call_reply.cc.html b/html/028call_reply.cc.html
index 3d7d74f9..b118e6aa 100644
--- a/html/028call_reply.cc.html
+++ b/html/028call_reply.cc.html
@@ -69,10 +69,8 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
   Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>pop_front<span class="Delimiter">();</span>
   <span class="Comment">// just in case 'main' returns a value, drop it for now</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>Current_routine<span class="Delimiter">-&gt;</span>calls<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">goto</span> stop_running_current_routine<span class="Delimiter">;</span>
-  <span class="Normal">const</span> instruction&amp; caller_instruction = current_instruction<span class="Delimiter">();</span>
-  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>caller_instruction<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
+  <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
     trace<span class="Delimiter">(</span><span class="Constant">9998</span><span class="Delimiter">,</span> <span class="Constant">&quot;run&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;result &quot;</span> &lt;&lt; i &lt;&lt; <span class="Constant">&quot; is &quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">))</span> &lt;&lt; end<span class="Delimiter">();</span>
-
   <span class="Comment">// make reply products available to caller</span>
   copy<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> ingredients<span class="Delimiter">.</span>end<span class="Delimiter">(),</span> inserter<span class="Delimiter">(</span>products<span class="Delimiter">,</span> products<span class="Delimiter">.</span>begin<span class="Delimiter">()));</span>
   <span class="Comment">// End Reply</span>
diff --git a/html/029tools.cc.html b/html/029tools.cc.html
index f87390ff..1b4ee2f3 100644
--- a/html/029tools.cc.html
+++ b/html/029tools.cc.html
@@ -49,7 +49,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> TRACE: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> &lt; <span class="Constant">3</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'trace' takes three or more ingredients rather than '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'trace' takes three or more ingredients rather than '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -239,7 +239,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> ASSERT: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'assert' takes exactly two ingredients rather than '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'assert' takes exactly two ingredients rather than '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_scalar<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
diff --git a/html/030container.cc.html b/html/030container.cc.html
index 49fcef97..1ddba97e 100644
--- a/html/030container.cc.html
+++ b/html/030container.cc.html
@@ -299,7 +299,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> GET: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'get' expects exactly 2 ingredients in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'get' expects exactly 2 ingredients in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>  <span class="Comment">// new copy for every invocation</span>
@@ -437,7 +437,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> PUT: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">3</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'put' expects exactly 3 ingredients in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'put' expects exactly 3 ingredients in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
@@ -470,10 +470,12 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
     raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'put &quot;</span> &lt;&lt; base<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;, &quot;</span> &lt;&lt; offset<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;' should write to &quot;</span> &lt;&lt; names_to_string_without_quotes<span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; but '&quot;</span> &lt;&lt; value<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot;' has type &quot;</span> &lt;&lt; names_to_string_without_quotes<span class="Delimiter">(</span>value<span class="Delimiter">.</span>type<span class="Delimiter">)</span> &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
-  <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name != inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">break</span><span class="Delimiter">;</span>  <span class="Comment">// no more checks necessary</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name != inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name<span class="Delimiter">)</span> <span class="Delimiter">{</span>
     raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;product of 'put' must be first ingredient '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;', but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
+  <span class="Comment">// End PUT Product Checks</span>
   <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span class="Delimiter">}</span>
 <span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
@@ -706,9 +708,9 @@ Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</spa
   <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> index = <span class="Constant">0</span><span class="Delimiter">;</span> index &lt; SIZE<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>steps<span class="Delimiter">);</span> ++index<span class="Delimiter">)</span> <span class="Delimiter">{</span>
     instruction&amp; inst = caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>index<span class="Delimiter">);</span>
     <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
-      check_or_set_invalid_types<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>type<span class="Delimiter">,</span> maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">),</span> <span class="Constant">&quot;'&quot;</span>+to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span>+<span class="Constant">&quot;'&quot;</span><span class="Delimiter">);</span>
+      check_or_set_invalid_types<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>type<span class="Delimiter">,</span> maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">),</span> <span class="Constant">&quot;'&quot;</span>+inst<span class="Delimiter">.</span>original_string+<span class="Constant">&quot;'&quot;</span><span class="Delimiter">);</span>
     <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
-      check_or_set_invalid_types<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>type<span class="Delimiter">,</span> maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">),</span> <span class="Constant">&quot;'&quot;</span>+to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span>+<span class="Constant">&quot;'&quot;</span><span class="Delimiter">);</span>
+      check_or_set_invalid_types<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>type<span class="Delimiter">,</span> maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">),</span> <span class="Constant">&quot;'&quot;</span>+inst<span class="Delimiter">.</span>original_string+<span class="Constant">&quot;'&quot;</span><span class="Delimiter">);</span>
   <span class="Delimiter">}</span>
   <span class="Comment">// End check_or_set_invalid_types</span>
 <span class="Delimiter">}</span>
@@ -746,6 +748,12 @@ container foo [
 <span class="traceContains">+parse: element: {x: &quot;number&quot;}</span>
 <span class="traceContains">+parse: element: {y: &quot;number&quot;}</span>
 
+<span class="Delimiter">:(scenario container_with_compound_field_type)</span>
+container foo [
+  <span class="Delimiter">{</span>x: <span class="Delimiter">(</span>address array <span class="Delimiter">(</span>address array character<span class="Delimiter">))}</span>
+]
+$error: <span class="Constant">0</span>
+
 <span class="Delimiter">:(before &quot;End transform_all&quot;)</span>
 check_container_field_types<span class="Delimiter">();</span>
 
@@ -761,12 +769,10 @@ check_container_field_types<span class="Delimiter">();</span>
 
 <span class="Normal">void</span> check_invalid_types<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; block<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; name<span class="Delimiter">)</span> <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>  <span class="Comment">// will throw a more precise error elsewhere</span>
-  <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>value == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    assert<span class="Delimiter">(</span>!type<span class="Delimiter">-&gt;</span>left &amp;&amp; !type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">);</span>
-    <span class="Identifier">return</span><span class="Delimiter">;</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>value != <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>  <span class="Comment">// value 0 = compound types (layer parse_tree) or type ingredients (layer shape_shifting_container)</span>
+    <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> type<span class="Delimiter">-&gt;</span>value<span class="Delimiter">))</span>
+      raise &lt;&lt; block &lt;&lt; <span class="Constant">&quot;unknown type in &quot;</span> &lt;&lt; name &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
   <span class="Delimiter">}</span>
-  <span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> type<span class="Delimiter">-&gt;</span>value<span class="Delimiter">))</span>
-    raise &lt;&lt; block &lt;&lt; <span class="Constant">&quot;unknown type in &quot;</span> &lt;&lt; name &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
   check_invalid_types<span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>left<span class="Delimiter">,</span> block<span class="Delimiter">,</span> name<span class="Delimiter">);</span>
   check_invalid_types<span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">,</span> block<span class="Delimiter">,</span> name<span class="Delimiter">);</span>
 <span class="Delimiter">}</span>
diff --git a/html/031merge.cc.html b/html/031merge.cc.html
index 4d590cd2..fd309bbe 100644
--- a/html/031merge.cc.html
+++ b/html/031merge.cc.html
@@ -154,19 +154,19 @@ Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</spa
     <span class="Normal">const</span> instruction&amp; inst = caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
     <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name != <span class="Constant">&quot;merge&quot;</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
     <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-      raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'merge' should yield a single product in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+      raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'merge' should yield a single product in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
       <span class="Identifier">continue</span><span class="Delimiter">;</span>
     <span class="Delimiter">}</span>
     reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> product = inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
     <span class="Comment">// Update product While Type-checking Merge</span>
     type_ordinal product_type = product<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>value<span class="Delimiter">;</span>
     <span class="Normal">if</span> <span class="Delimiter">(</span>product_type == <span class="Constant">0</span> || !contains_key<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> product_type<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-      raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'merge' should yield a container in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+      raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'merge' should yield a container in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
       <span class="Identifier">continue</span><span class="Delimiter">;</span>
     <span class="Delimiter">}</span>
     <span class="Normal">const</span> type_info&amp; info = get<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> product_type<span class="Delimiter">);</span>
     <span class="Normal">if</span> <span class="Delimiter">(</span>info<span class="Delimiter">.</span>kind != CONTAINER &amp;&amp; info<span class="Delimiter">.</span>kind != EXCLUSIVE_CONTAINER<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-      raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'merge' should yield a container in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+      raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'merge' should yield a container in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
       <span class="Identifier">continue</span><span class="Delimiter">;</span>
     <span class="Delimiter">}</span>
     check_merge_call<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">,</span> product<span class="Delimiter">,</span> caller<span class="Delimiter">,</span> inst<span class="Delimiter">);</span>
@@ -181,7 +181,7 @@ Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</spa
     assert<span class="Delimiter">(</span>!state<span class="Delimiter">.</span>data<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
     trace<span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">&quot;transform&quot;</span><span class="Delimiter">)</span> &lt;&lt; ingredient_index &lt;&lt; <span class="Constant">&quot; vs &quot;</span> &lt;&lt; SIZE<span class="Delimiter">(</span>ingredients<span class="Delimiter">)</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Normal">if</span> <span class="Delimiter">(</span>ingredient_index &gt;= SIZE<span class="Delimiter">(</span>ingredients<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-      raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;too few ingredients in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+      raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;too few ingredients in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
       <span class="Identifier">return</span><span class="Delimiter">;</span>
     <span class="Delimiter">}</span>
     reagent&amp; container = state<span class="Delimiter">.</span>data<span class="Delimiter">.</span>top<span class="Delimiter">().</span>container<span class="Delimiter">;</span>
@@ -202,7 +202,7 @@ Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</spa
             state<span class="Delimiter">.</span>data<span class="Delimiter">.</span>pop<span class="Delimiter">();</span>
             <span class="Normal">if</span> <span class="Delimiter">(</span>state<span class="Delimiter">.</span>data<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
               <span class="Normal">if</span> <span class="Delimiter">(</span>ingredient_index &lt; SIZE<span class="Delimiter">(</span>ingredients<span class="Delimiter">))</span>
-                raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;too many ingredients in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+                raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;too many ingredients in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
               <span class="Identifier">return</span><span class="Delimiter">;</span>
             <span class="Delimiter">}</span>
             ++state<span class="Delimiter">.</span>data<span class="Delimiter">.</span>top<span class="Delimiter">().</span>container_element_index<span class="Delimiter">;</span>
@@ -218,7 +218,7 @@ Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</spa
       <span class="Comment">// End check_merge_call Cases</span>
       <span class="Normal">default</span>: <span class="Delimiter">{</span>
         <span class="Normal">if</span> <span class="Delimiter">(</span>!types_coercible<span class="Delimiter">(</span>container<span class="Delimiter">,</span> ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>ingredient_index<span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-          raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;incorrect type of ingredient &quot;</span> &lt;&lt; ingredient_index &lt;&lt; <span class="Constant">&quot; in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+          raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;incorrect type of ingredient &quot;</span> &lt;&lt; ingredient_index &lt;&lt; <span class="Constant">&quot; in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
           raise &lt;&lt; <span class="Constant">&quot;  (expected '&quot;</span> &lt;&lt; debug_string<span class="Delimiter">(</span>container<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;')</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
           raise &lt;&lt; <span class="Constant">&quot;  (got '&quot;</span> &lt;&lt; debug_string<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>ingredient_index<span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot;')</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
           <span class="Identifier">return</span><span class="Delimiter">;</span>
@@ -229,7 +229,7 @@ Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</spa
           state<span class="Delimiter">.</span>data<span class="Delimiter">.</span>pop<span class="Delimiter">();</span>
           <span class="Normal">if</span> <span class="Delimiter">(</span>state<span class="Delimiter">.</span>data<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
             <span class="Normal">if</span> <span class="Delimiter">(</span>ingredient_index &lt; SIZE<span class="Delimiter">(</span>ingredients<span class="Delimiter">))</span>
-              raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;too many ingredients in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+              raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;too many ingredients in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
             <span class="Identifier">return</span><span class="Delimiter">;</span>
           <span class="Delimiter">}</span>
           ++state<span class="Delimiter">.</span>data<span class="Delimiter">.</span>top<span class="Delimiter">().</span>container_element_index<span class="Delimiter">;</span>
diff --git a/html/032array.cc.html b/html/032array.cc.html
index c432da93..7b551645 100644
--- a/html/032array.cc.html
+++ b/html/032array.cc.html
@@ -55,7 +55,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> CREATE_ARRAY: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'create-array' needs one product and no ingredients but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'create-array' needs one product and no ingredients but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> product = inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
@@ -65,12 +65,12 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!product<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;create array of what? '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;create array of what? '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Comment">// 'create-array' will need to check properties rather than types</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!product<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;create array of what size? '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;create array of what size? '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_integer<span class="Delimiter">(</span>product<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>
@@ -235,7 +235,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> INDEX: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'index' expects exactly 2 ingredients in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'index' expects exactly 2 ingredients in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
@@ -397,7 +397,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> PUT_INDEX: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">3</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'put-index' expects exactly 3 ingredients in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'put-index' expects exactly 3 ingredients in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
@@ -420,10 +420,12 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
     raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'put-index &quot;</span> &lt;&lt; base<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;, &quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;' should store &quot;</span> &lt;&lt; names_to_string_without_quotes<span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; but '&quot;</span> &lt;&lt; value<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot;' has type &quot;</span> &lt;&lt; names_to_string_without_quotes<span class="Delimiter">(</span>value<span class="Delimiter">.</span>type<span class="Delimiter">)</span> &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
-  <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> &amp;&amp; inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name != inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">break</span><span class="Delimiter">;</span>  <span class="Comment">// no more checks necessary</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name != inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name<span class="Delimiter">)</span> <span class="Delimiter">{</span>
     raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;product of 'put-index' must be first ingredient '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;', but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
+  <span class="Comment">// End PUT_INDEX Product Checks</span>
   <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span class="Delimiter">}</span>
 <span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
@@ -517,7 +519,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> LENGTH: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'length' expects exactly 2 ingredients in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'length' expects exactly 2 ingredients in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> array = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
diff --git a/html/033exclusive_container.cc.html b/html/033exclusive_container.cc.html
index 5dfe9521..9b31c886 100644
--- a/html/033exclusive_container.cc.html
+++ b/html/033exclusive_container.cc.html
@@ -130,7 +130,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Normal">case</span> MAYBE_CONVERT: <span class="Delimiter">{</span>
   <span class="Normal">const</span> recipe&amp; caller = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">);</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'maybe-convert' expects exactly 2 ingredients in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'maybe-convert' expects exactly 2 ingredients in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
@@ -145,7 +145,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'maybe-convert' expects exactly 2 products in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'maybe-convert' expects exactly 2 products in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> product = inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
@@ -153,7 +153,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
   reagent&amp; offset = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
   populate_value<span class="Delimiter">(</span>offset<span class="Delimiter">);</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>offset<span class="Delimiter">.</span>value &gt;= SIZE<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> base<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>value<span class="Delimiter">).</span>elements<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;invalid tag &quot;</span> &lt;&lt; offset<span class="Delimiter">.</span>value &lt;&lt; <span class="Constant">&quot; in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;invalid tag &quot;</span> &lt;&lt; offset<span class="Delimiter">.</span>value &lt;&lt; <span class="Constant">&quot; in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">const</span> reagent&amp; variant = variant_type<span class="Delimiter">(</span>base<span class="Delimiter">,</span> offset<span class="Delimiter">.</span>value<span class="Delimiter">);</span>
@@ -188,11 +188,13 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
     <span class="Normal">const</span> reagent&amp; variant = variant_type<span class="Delimiter">(</span>base<span class="Delimiter">,</span> tag<span class="Delimiter">);</span>
     trace<span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing 1 in location &quot;</span> &lt;&lt; status<span class="Delimiter">.</span>value &lt;&lt; end<span class="Delimiter">();</span>
     put<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> status<span class="Delimiter">.</span>value<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">);</span>
-    <span class="Comment">// Write Memory in Successful MAYBE_CONVERT in Run</span>
-    <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; size_of<span class="Delimiter">(</span>variant<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-      <span class="Normal">double</span> val = get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> base_address+<span class="Comment">/*</span><span class="Comment">skip tag</span><span class="Comment">*/</span><span class="Constant">1</span>+i<span class="Delimiter">);</span>
-      trace<span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>val<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; in location &quot;</span> &lt;&lt; product<span class="Delimiter">.</span>value+i &lt;&lt; end<span class="Delimiter">();</span>
-      put<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> product<span class="Delimiter">.</span>value+i<span class="Delimiter">,</span> val<span class="Delimiter">);</span>
+    <span class="Normal">if</span> <span class="Delimiter">(</span>!is_dummy<span class="Delimiter">(</span>product<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+      <span class="Comment">// Write Memory in Successful MAYBE_CONVERT in Run</span>
+      <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; size_of<span class="Delimiter">(</span>variant<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+        <span class="Normal">double</span> val = get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> base_address+<span class="Comment">/*</span><span class="Comment">skip tag</span><span class="Comment">*/</span><span class="Constant">1</span>+i<span class="Delimiter">);</span>
+        trace<span class="Delimiter">(</span><span class="Constant">9999</span><span class="Delimiter">,</span> <span class="Constant">&quot;mem&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;storing &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>val<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; in location &quot;</span> &lt;&lt; product<span class="Delimiter">.</span>value+i &lt;&lt; end<span class="Delimiter">();</span>
+        put<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> product<span class="Delimiter">.</span>value+i<span class="Delimiter">,</span> val<span class="Delimiter">);</span>
+      <span class="Delimiter">}</span>
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
   <span class="Normal">else</span> <span class="Delimiter">{</span>
@@ -228,6 +230,15 @@ def main [
 ]
 <span class="traceContains">+error: main: 'maybe-convert 12:number-or-point/unsafe, 1:variant' should write to point but '20' has type number</span>
 
+<span class="Delimiter">:(scenario maybe_convert_dummy_product)</span>
+def main [
+  <span class="Constant">12</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">1</span>
+  <span class="Constant">13</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">35</span>
+  <span class="Constant">14</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">36</span>
+  _<span class="Delimiter">,</span> <span class="Constant">21</span>:boolean<span class="Special"> &lt;- </span>maybe-convert <span class="Constant">12</span>:number-<span class="Normal">or</span>-point/unsafe<span class="Delimiter">,</span> <span class="Constant">1</span>:variant
+]
+$error: <span class="Constant">0</span>
+
 <span class="SalientComment">//:: Allow exclusive containers to be defined in mu code.</span>
 
 <span class="Delimiter">:(scenario exclusive_container)</span>
@@ -334,13 +345,13 @@ $error: <span class="Constant">0</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>types_strictly_match<span class="Delimiter">(</span>container<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>ingredient_index<span class="Delimiter">)))</span>
     <span class="Identifier">return</span><span class="Delimiter">;</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_literal<span class="Delimiter">(</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>ingredient_index<span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;ingredient &quot;</span> &lt;&lt; ingredient_index &lt;&lt; <span class="Constant">&quot; of 'merge' should be a literal, for the tag of exclusive-container '&quot;</span> &lt;&lt; container_info<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot;' in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;ingredient &quot;</span> &lt;&lt; ingredient_index &lt;&lt; <span class="Constant">&quot; of 'merge' should be a literal, for the tag of exclusive-container '&quot;</span> &lt;&lt; container_info<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot;' in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">return</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> ingredient = ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>ingredient_index<span class="Delimiter">);</span>  <span class="Comment">// unnecessary copy just to keep this function from modifying caller</span>
   populate_value<span class="Delimiter">(</span>ingredient<span class="Delimiter">);</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>ingredient<span class="Delimiter">.</span>value &gt;= SIZE<span class="Delimiter">(</span>container_info<span class="Delimiter">.</span>elements<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;invalid tag at &quot;</span> &lt;&lt; ingredient_index &lt;&lt; <span class="Constant">&quot; for '&quot;</span> &lt;&lt; container_info<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot;' in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;invalid tag at &quot;</span> &lt;&lt; ingredient_index &lt;&lt; <span class="Constant">&quot; for '&quot;</span> &lt;&lt; container_info<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot;' in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">return</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">const</span> reagent&amp; variant = variant_type<span class="Delimiter">(</span>container<span class="Delimiter">,</span> ingredient<span class="Delimiter">.</span>value<span class="Delimiter">);</span>
diff --git a/html/034address.cc.html b/html/034address.cc.html
index f2ef1165..12aa417c 100644
--- a/html/034address.cc.html
+++ b/html/034address.cc.html
@@ -186,7 +186,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Normal">case</span> NEW: <span class="Delimiter">{</span>
   <span class="Normal">const</span> recipe&amp; caller = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">);</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>empty<span class="Delimiter">()</span> || SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> &gt; <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'new' requires one or two ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'new' requires one or two ingredients, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Comment">// End NEW Check Special-cases</span>
@@ -200,7 +200,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!product_of_new_is_valid<span class="Delimiter">(</span>inst<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;product of 'new' has incorrect type: '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;product of 'new' has incorrect type: '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Identifier">break</span><span class="Delimiter">;</span>
diff --git a/html/035lookup.cc.html b/html/035lookup.cc.html
index 2f952cdd..49ab32c8 100644
--- a/html/035lookup.cc.html
+++ b/html/035lookup.cc.html
@@ -272,6 +272,27 @@ def main [
 <span class="Delimiter">:(after &quot;Update PUT base in Run&quot;)</span>
 canonize<span class="Delimiter">(</span>base<span class="Delimiter">);</span>
 
+<span class="Delimiter">:(scenario put_product_error_with_lookup)</span>
+<span class="Special">% Hide_errors = true;</span>
+def main [
+  <span class="Constant">1</span>:address:point<span class="Special"> &lt;- </span>copy <span class="Constant">10</span>/unsafe
+  <span class="Comment"># 10 reserved for refcount</span>
+  <span class="Constant">11</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">34</span>
+  <span class="Constant">12</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">35</span>
+  <span class="Constant">1</span>:address:point<span class="Special"> &lt;- </span>put <span class="Constant">1</span>:address:point/lookup<span class="Delimiter">,</span> x:offset<span class="Delimiter">,</span> <span class="Constant">36</span>
+]
+<span class="traceContains">+error: main: product of 'put' must be first ingredient '1:address:point/lookup', but got '1:address:point'</span>
+
+<span class="Delimiter">:(before &quot;End PUT Product Checks&quot;)</span>
+reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> p = inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
+<span class="Normal">if</span> <span class="Delimiter">(</span>!canonize_type<span class="Delimiter">(</span>p<span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span>  <span class="Comment">// error raised elsewhere</span>
+reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> i = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
+<span class="Normal">if</span> <span class="Delimiter">(</span>!canonize_type<span class="Delimiter">(</span>i<span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span>  <span class="Comment">// error raised elsewhere</span>
+<span class="Normal">if</span> <span class="Delimiter">(</span>!types_strictly_match<span class="Delimiter">(</span>p<span class="Delimiter">,</span> i<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+  raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;product of 'put' must be first ingredient '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;', but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+  <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span class="Delimiter">}</span>
+
 <span class="Delimiter">:(scenario new_error)</span>
 <span class="Special">% Hide_errors = true;</span>
 def main [
@@ -359,6 +380,29 @@ def main [
 ]
 <span class="traceContains">+mem: storing 34 in location 3</span>
 
+<span class="Delimiter">:(scenario put_index_product_error_with_lookup)</span>
+<span class="Special">% Hide_errors = true;</span>
+def main [
+  <span class="Comment"># 10 reserved for refcount</span>
+  <span class="Constant">11</span>:array:number:<span class="Constant">3</span><span class="Special"> &lt;- </span>create-array
+  <span class="Constant">12</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">14</span>
+  <span class="Constant">13</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">15</span>
+  <span class="Constant">14</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">16</span>
+  <span class="Constant">1</span>:address:array:number<span class="Special"> &lt;- </span>copy <span class="Constant">10</span>/unsafe
+  <span class="Constant">1</span>:address:array:number<span class="Special"> &lt;- </span>put-index <span class="Constant">1</span>:address:array:number/lookup<span class="Delimiter">,</span> <span class="Constant">1</span><span class="Delimiter">,</span> <span class="Constant">34</span>
+]
+<span class="traceContains">+error: main: product of 'put-index' must be first ingredient '1:address:array:number/lookup', but got '1:address:array:number'</span>
+
+<span class="Delimiter">:(before &quot;End PUT_INDEX Product Checks&quot;)</span>
+reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> p = inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
+<span class="Normal">if</span> <span class="Delimiter">(</span>!canonize_type<span class="Delimiter">(</span>p<span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span>  <span class="Comment">// error raised elsewhere</span>
+reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> i = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
+<span class="Normal">if</span> <span class="Delimiter">(</span>!canonize_type<span class="Delimiter">(</span>i<span class="Delimiter">))</span> <span class="Identifier">break</span><span class="Delimiter">;</span>  <span class="Comment">// error raised elsewhere</span>
+<span class="Normal">if</span> <span class="Delimiter">(</span>!types_strictly_match<span class="Delimiter">(</span>p<span class="Delimiter">,</span> i<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+  raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;product of 'put-index' must be first ingredient '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;', but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+  <span class="Identifier">break</span><span class="Delimiter">;</span>
+<span class="Delimiter">}</span>
+
 <span class="Delimiter">:(scenario dilated_reagent_in_static_array)</span>
 def main [
   <span class="Delimiter">{</span><span class="Constant">1</span>: <span class="Delimiter">(</span>array <span class="Delimiter">(</span>address number<span class="Delimiter">)</span> <span class="Constant">3</span><span class="Delimiter">)}</span><span class="Special"> &lt;- </span>create-array
diff --git a/html/036refcount.cc.html b/html/036refcount.cc.html
index 89e9d202..05896aad 100644
--- a/html/036refcount.cc.html
+++ b/html/036refcount.cc.html
@@ -351,7 +351,6 @@ Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</spa
 <span class="Normal">void</span> append_addresses<span class="Delimiter">(</span><span class="Normal">int</span> base_offset<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree* type<span class="Delimiter">,</span> map&lt;set&lt;tag_condition_info&gt;<span class="Delimiter">,</span> set&lt;address_element_info&gt; &gt;&amp; out<span class="Delimiter">,</span> <span class="Normal">const</span> set&lt;tag_condition_info&gt;&amp; key<span class="Delimiter">)</span> <span class="Delimiter">{</span>
   <span class="Normal">const</span> type_info&amp; info = get<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> type<span class="Delimiter">-&gt;</span>value<span class="Delimiter">);</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>name == <span class="Constant">&quot;address&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    assert<span class="Delimiter">(</span>type<span class="Delimiter">-&gt;</span>right &amp;&amp; type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">-&gt;</span>name != <span class="Constant">&quot;array&quot;</span><span class="Delimiter">);</span>  <span class="Comment">// array types can't be handled without a full reagent and its value</span>
     get_or_insert<span class="Delimiter">(</span>out<span class="Delimiter">,</span> key<span class="Delimiter">).</span>insert<span class="Delimiter">(</span>address_element_info<span class="Delimiter">(</span>base_offset<span class="Delimiter">,</span> <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*type<span class="Delimiter">-&gt;</span>right<span class="Delimiter">)));</span>
     <span class="Identifier">return</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
diff --git a/html/039location_array.cc.html b/html/039location_array.cc.html
index e22a66bf..2b2e23cf 100644
--- a/html/039location_array.cc.html
+++ b/html/039location_array.cc.html
@@ -38,7 +38,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Normal">case</span> TO_LOCATION_ARRAY: <span class="Delimiter">{</span>
   <span class="Normal">const</span> recipe&amp; caller = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">);</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_address_of_array_of_numbers<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;product of 'to-location-array' has incorrect type: '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;product of 'to-location-array' has incorrect type: '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Identifier">break</span><span class="Delimiter">;</span>
diff --git a/html/042name.cc.html b/html/042name.cc.html
index 996a039d..adb432be 100644
--- a/html/042name.cc.html
+++ b/html/042name.cc.html
@@ -132,7 +132,7 @@ Name = Name_snapshot<span class="Delimiter">;</span>
 <span class="Normal">bool</span> is_disqualified<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">mutable</span><span class="Comment">*/</span> reagent&amp; x<span class="Delimiter">,</span> <span class="Normal">const</span> instruction&amp; inst<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; recipe_name<span class="Delimiter">)</span> <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
     <span class="Comment">// End Null-type is_disqualified Exceptions</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>recipe_name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;missing type for '&quot;</span> &lt;&lt; x<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;' in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>recipe_name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;missing type for '&quot;</span> &lt;&lt; x<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;' in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>is_raw<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
@@ -318,7 +318,7 @@ def main [
 <span class="Comment">// convert variant names of exclusive containers</span>
 <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name == <span class="Constant">&quot;maybe-convert&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;exactly 2 ingredients expected in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;exactly 2 ingredients expected in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   assert<span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">)));</span>
@@ -326,7 +326,7 @@ def main [
     <span class="Comment">// since first non-address in base type must be an exclusive container, we don't have to canonize</span>
     type_ordinal base_type = skip_addresses<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>type<span class="Delimiter">);</span>
     <span class="Normal">if</span> <span class="Delimiter">(</span>base_type == -<span class="Constant">1</span><span class="Delimiter">)</span>
-      raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;expected an exclusive-container in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+      raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;expected an exclusive-container in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Normal">if</span> <span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> base_type<span class="Delimiter">))</span> <span class="Delimiter">{</span>  <span class="Comment">// otherwise we'll raise an error elsewhere</span>
       inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>set_value<span class="Delimiter">(</span>find_element_name<span class="Delimiter">(</span>base_type<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>name<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">));</span>
       trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">&quot;name&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;variant &quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>name &lt;&lt; <span class="Constant">&quot; of type &quot;</span> &lt;&lt; get<span class="Delimiter">(</span>Type<span class="Delimiter">,</span> base_type<span class="Delimiter">).</span>name &lt;&lt; <span class="Constant">&quot; has tag &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">).</span>value<span class="Delimiter">)</span> &lt;&lt; end<span class="Delimiter">();</span>
diff --git a/html/050scenario.cc.html b/html/050scenario.cc.html
index 213874ff..d6805cfd 100644
--- a/html/050scenario.cc.html
+++ b/html/050scenario.cc.html
@@ -156,6 +156,7 @@ Num_core_mu_tests = SIZE<span class="Delimiter">(</span>Scenarios<span class="De
 Hide_missing_default_space_errors = <span class="Constant">false</span><span class="Delimiter">;</span>
 <span class="Normal">time_t</span> mu_time<span class="Delimiter">;</span> time<span class="Delimiter">(</span>&amp;mu_time<span class="Delimiter">);</span>
 cerr &lt;&lt; <span class="Constant">&quot;</span><span class="cSpecial">\n</span><span class="Constant">Mu tests: &quot;</span> &lt;&lt; ctime<span class="Delimiter">(</span>&amp;mu_time<span class="Delimiter">);</span>
+<span class="Normal">run_mu_scenarios</span>:
 <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>Scenarios<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
 <span class="CommentedCode">//?   cerr &lt;&lt; i &lt;&lt; &quot;: &quot; &lt;&lt; Scenarios.at(i).name &lt;&lt; '\n';</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>i == Num_core_mu_tests<span class="Delimiter">)</span> <span class="Delimiter">{</span>
@@ -166,6 +167,14 @@ cerr &lt;&lt; <span class="Constant">&quot;</span><span class="cSpecial">\n</spa
   <span class="Normal">if</span> <span class="Delimiter">(</span>Passed<span class="Delimiter">)</span> cerr &lt;&lt; <span class="Constant">&quot;.&quot;</span><span class="Delimiter">;</span>
 <span class="Delimiter">}</span>
 
+<span class="Delimiter">:(after &quot;End Test Run Initialization&quot;)</span>
+<span class="Normal">if</span> <span class="Delimiter">(</span>Test_only_app &amp;&amp; Num_core_mu_tests &lt; SIZE<span class="Delimiter">(</span>Scenarios<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+  <span class="Comment">// we have app tests; skip core mu tests</span>
+  Scenarios<span class="Delimiter">.</span>erase<span class="Delimiter">(</span>Scenarios<span class="Delimiter">.</span>begin<span class="Delimiter">(),</span> Scenarios<span class="Delimiter">.</span>begin<span class="Delimiter">()</span>+Num_core_mu_tests<span class="Delimiter">);</span>
+  <span class="Comment">// skip C tests</span>
+  <span class="Identifier">goto</span> run_mu_scenarios<span class="Delimiter">;</span>
+<span class="Delimiter">}</span>
+
 <span class="Comment">//: Convenience: run a single named scenario.</span>
 <span class="Delimiter">:(after &quot;Test Runs&quot;)</span>
 <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>Scenarios<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
@@ -192,10 +201,10 @@ cerr &lt;&lt; <span class="Constant">&quot;</span><span class="cSpecial">\n</spa
   bind_special_scenario_names<span class="Delimiter">(</span>tmp<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">));</span>
   transform_all<span class="Delimiter">();</span>
   run<span class="Delimiter">(</span>tmp<span class="Delimiter">.</span>front<span class="Delimiter">());</span>
-  <span class="Normal">if</span> <span class="Delimiter">(</span>Passed &amp;&amp; !Hide_errors &amp;&amp; trace_count<span class="Delimiter">(</span><span class="Constant">&quot;error&quot;</span><span class="Delimiter">)</span> &gt; <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>!Hide_errors &amp;&amp; trace_count<span class="Delimiter">(</span><span class="Constant">&quot;error&quot;</span><span class="Delimiter">)</span> &gt; <span class="Constant">0</span><span class="Delimiter">)</span>
     Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>!Passed<span class="Delimiter">)</span>
     ++Num_failures<span class="Delimiter">;</span>
-  <span class="Delimiter">}</span>
   <span class="Comment">// End Mu Test Teardown</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>not_already_inside_test &amp;&amp; Trace_stream<span class="Delimiter">)</span> <span class="Delimiter">{</span>
     teardown<span class="Delimiter">();</span>
@@ -380,10 +389,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
       <span class="Normal">else</span>
         <span class="Comment">// just testing scenario support</span>
         raise &lt;&lt; <span class="Constant">&quot;location '&quot;</span> &lt;&lt; address &lt;&lt; <span class="Constant">&quot;' can't contain non-number &quot;</span> &lt;&lt; rhs &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
-      <span class="Normal">if</span> <span class="Delimiter">(</span>!Scenario_testing_scenario<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-        Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
-        ++Num_failures<span class="Delimiter">;</span>
-      <span class="Delimiter">}</span>
+      <span class="Normal">if</span> <span class="Delimiter">(</span>!Scenario_testing_scenario<span class="Delimiter">)</span> Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
       <span class="Identifier">return</span><span class="Delimiter">;</span>
     <span class="Delimiter">}</span>
     <span class="Normal">double</span> value = to_double<span class="Delimiter">(</span>rhs<span class="Delimiter">);</span>
@@ -399,10 +405,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
         <span class="Comment">// just testing scenario support</span>
         raise &lt;&lt; <span class="Constant">&quot;expected location '&quot;</span> &lt;&lt; address &lt;&lt; <span class="Constant">&quot;' to contain &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>value<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; but saw &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> address<span class="Delimiter">))</span> &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
       <span class="Delimiter">}</span>
-      <span class="Normal">if</span> <span class="Delimiter">(</span>!Scenario_testing_scenario<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-        Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
-        ++Num_failures<span class="Delimiter">;</span>
-      <span class="Delimiter">}</span>
+      <span class="Normal">if</span> <span class="Delimiter">(</span>!Scenario_testing_scenario<span class="Delimiter">)</span> Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
       <span class="Identifier">return</span><span class="Delimiter">;</span>
     <span class="Delimiter">}</span>
     locations_checked<span class="Delimiter">.</span>insert<span class="Delimiter">(</span>address<span class="Delimiter">);</span>
@@ -438,10 +441,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
       raise &lt;&lt; <span class="Constant">&quot;</span><span class="cSpecial">\n</span><span class="Constant">F - &quot;</span> &lt;&lt; Current_scenario<span class="Delimiter">-&gt;</span>name &lt;&lt; <span class="Constant">&quot;: expected location '&quot;</span> &lt;&lt; address &lt;&lt; <span class="Constant">&quot;' to contain length &quot;</span> &lt;&lt; SIZE<span class="Delimiter">(</span>literal<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; of string [&quot;</span> &lt;&lt; literal &lt;&lt; <span class="Constant">&quot;] but saw &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> address<span class="Delimiter">))</span> &lt;&lt; <span class="Constant">&quot; (&quot;</span> &lt;&lt; read_mu_string<span class="Delimiter">(</span>address<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;)</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Normal">else</span>
       raise &lt;&lt; <span class="Constant">&quot;expected location '&quot;</span> &lt;&lt; address &lt;&lt; <span class="Constant">&quot;' to contain length &quot;</span> &lt;&lt; SIZE<span class="Delimiter">(</span>literal<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; of string [&quot;</span> &lt;&lt; literal &lt;&lt; <span class="Constant">&quot;] but saw &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> address<span class="Delimiter">))</span> &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
-    <span class="Normal">if</span> <span class="Delimiter">(</span>!Scenario_testing_scenario<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-      Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
-      ++Num_failures<span class="Delimiter">;</span>
-    <span class="Delimiter">}</span>
+    <span class="Normal">if</span> <span class="Delimiter">(</span>!Scenario_testing_scenario<span class="Delimiter">)</span> Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
     <span class="Identifier">return</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   ++address<span class="Delimiter">;</span>  <span class="Comment">// now skip length</span>
@@ -456,10 +456,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
         <span class="Comment">// just testing scenario support</span>
         raise &lt;&lt; <span class="Constant">&quot;expected location &quot;</span> &lt;&lt; <span class="Delimiter">(</span>address+i<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; to contain &quot;</span> &lt;&lt; literal<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot; but saw &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> address+i<span class="Delimiter">))</span> &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
       <span class="Delimiter">}</span>
-      <span class="Normal">if</span> <span class="Delimiter">(</span>!Scenario_testing_scenario<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-        Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
-        ++Num_failures<span class="Delimiter">;</span>
-      <span class="Delimiter">}</span>
+      <span class="Normal">if</span> <span class="Delimiter">(</span>!Scenario_testing_scenario<span class="Delimiter">)</span> Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
       <span class="Identifier">return</span><span class="Delimiter">;</span>
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
@@ -712,7 +709,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> CHECK_TRACE_COUNT_FOR_LABEL: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'check-trace-count-for-label' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'check-trace-count-for-label' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -741,10 +738,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
       <span class="Comment">// just testing scenario support</span>
       raise &lt;&lt; maybe<span class="Delimiter">(</span>current_recipe_name<span class="Delimiter">())</span> &lt;&lt; <span class="Constant">&quot;expected &quot;</span> &lt;&lt; expected_count &lt;&lt; <span class="Constant">&quot; lines in trace with label '&quot;</span> &lt;&lt; label &lt;&lt; <span class="Constant">&quot;' in trace</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Delimiter">}</span>
-    <span class="Normal">if</span> <span class="Delimiter">(</span>!Scenario_testing_scenario<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-      Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
-      ++Num_failures<span class="Delimiter">;</span>
-    <span class="Delimiter">}</span>
+    <span class="Normal">if</span> <span class="Delimiter">(</span>!Scenario_testing_scenario<span class="Delimiter">)</span> Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span class="Delimiter">}</span>
diff --git a/html/053recipe_header.cc.html b/html/053recipe_header.cc.html
index 1a217076..3d785dc4 100644
--- a/html/053recipe_header.cc.html
+++ b/html/053recipe_header.cc.html
@@ -268,13 +268,13 @@ Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</spa
     <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; min<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">),</span> SIZE<span class="Delimiter">(</span>callee<span class="Delimiter">.</span>ingredients<span class="Delimiter">));</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
       <span class="Comment">// ingredients coerced from call to callee</span>
       <span class="Normal">if</span> <span class="Delimiter">(</span>!types_coercible<span class="Delimiter">(</span>callee<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span>
-        raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;ingredient &quot;</span> &lt;&lt; i &lt;&lt; <span class="Constant">&quot; has the wrong type at '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+        raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;ingredient &quot;</span> &lt;&lt; i &lt;&lt; <span class="Constant">&quot; has the wrong type at '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Delimiter">}</span>
     <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; min<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">),</span> SIZE<span class="Delimiter">(</span>callee<span class="Delimiter">.</span>products<span class="Delimiter">));</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
       <span class="Normal">if</span> <span class="Delimiter">(</span>is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
       <span class="Comment">// products coerced from callee to call</span>
       <span class="Normal">if</span> <span class="Delimiter">(</span>!types_coercible<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> callee<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span>
-        raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;product &quot;</span> &lt;&lt; i &lt;&lt; <span class="Constant">&quot; has the wrong type at '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+        raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;product &quot;</span> &lt;&lt; i &lt;&lt; <span class="Constant">&quot; has the wrong type at '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
 <span class="Delimiter">}</span>
@@ -304,12 +304,12 @@ Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</spa
     <span class="Normal">const</span> instruction&amp; inst = caller_recipe<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
     <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name != <span class="Constant">&quot;reply&quot;</span> &amp;&amp; inst<span class="Delimiter">.</span>name != <span class="Constant">&quot;return&quot;</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
     <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>caller_recipe<span class="Delimiter">.</span>products<span class="Delimiter">)</span> != SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">))</span> <span class="Delimiter">{</span>
-      raise &lt;&lt; maybe<span class="Delimiter">(</span>caller_recipe<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;replied with the wrong number of products at '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+      raise &lt;&lt; maybe<span class="Delimiter">(</span>caller_recipe<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;replied with the wrong number of products at '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
       <span class="Identifier">continue</span><span class="Delimiter">;</span>
     <span class="Delimiter">}</span>
     <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; SIZE<span class="Delimiter">(</span>caller_recipe<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
       <span class="Normal">if</span> <span class="Delimiter">(</span>!types_match<span class="Delimiter">(</span>caller_recipe<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span>
-        raise &lt;&lt; maybe<span class="Delimiter">(</span>caller_recipe<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;replied with the wrong type at '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+        raise &lt;&lt; maybe<span class="Delimiter">(</span>caller_recipe<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;replied with the wrong type at '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
 <span class="Delimiter">}</span>
diff --git a/html/054static_dispatch.cc.html b/html/054static_dispatch.cc.html
index e90b81f7..dec0d19e 100644
--- a/html/054static_dispatch.cc.html
+++ b/html/054static_dispatch.cc.html
@@ -228,7 +228,7 @@ string best_variant<span class="Delimiter">(</span>instruction&amp; inst<span cl
 
   <span class="Comment">// error messages</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &gt;= MAX_PRIMITIVE_RECIPES<span class="Delimiter">)</span> <span class="Delimiter">{</span>  <span class="Comment">// we currently don't check types for primitive variants</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>caller_recipe<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;failed to find a matching call for '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>caller_recipe<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;failed to find a matching call for '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Normal">for</span> <span class="Delimiter">(</span>list&lt;call&gt;::iterator p = <span class="Comment">/*</span><span class="Comment">skip</span><span class="Comment">*/</span>++resolve_stack<span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != resolve_stack<span class="Delimiter">.</span>end<span class="Delimiter">();</span> ++p<span class="Delimiter">)</span> <span class="Delimiter">{</span>
       <span class="Normal">const</span> recipe&amp; specializer_recipe = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> p<span class="Delimiter">-&gt;</span>running_recipe<span class="Delimiter">);</span>
       <span class="Normal">const</span> instruction&amp; specializer_inst = specializer_recipe<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>p<span class="Delimiter">-&gt;</span>running_step_index<span class="Delimiter">);</span>
diff --git a/html/056shape_shifting_recipe.cc.html b/html/056shape_shifting_recipe.cc.html
index 240ffa5b..98c0d5a3 100644
--- a/html/056shape_shifting_recipe.cc.html
+++ b/html/056shape_shifting_recipe.cc.html
@@ -313,9 +313,9 @@ recipe_ordinal new_variant<span class="Delimiter">(</span>recipe_ordinal exempla
     instruction&amp; inst = variant<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
     trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">&quot;transform&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;  instruction: &quot;</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> in = <span class="Constant">0</span><span class="Delimiter">;</span> in &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++in<span class="Delimiter">)</span>
-      save_or_deduce_type_name<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">),</span> type_names<span class="Delimiter">,</span> variant<span class="Delimiter">,</span> <span class="Constant">&quot; in '&quot;</span> + to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> + <span class="Constant">&quot;'&quot;</span><span class="Delimiter">);</span>
+      save_or_deduce_type_name<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">),</span> type_names<span class="Delimiter">,</span> variant<span class="Delimiter">,</span> <span class="Constant">&quot; in '&quot;</span> + inst<span class="Delimiter">.</span>original_string + <span class="Constant">&quot;'&quot;</span><span class="Delimiter">);</span>
     <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> out = <span class="Constant">0</span><span class="Delimiter">;</span> out &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++out<span class="Delimiter">)</span>
-      save_or_deduce_type_name<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">),</span> type_names<span class="Delimiter">,</span> variant<span class="Delimiter">,</span> <span class="Constant">&quot; in '&quot;</span> + to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> + <span class="Constant">&quot;'&quot;</span><span class="Delimiter">);</span>
+      save_or_deduce_type_name<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">),</span> type_names<span class="Delimiter">,</span> variant<span class="Delimiter">,</span> <span class="Constant">&quot; in '&quot;</span> + inst<span class="Delimiter">.</span>original_string + <span class="Constant">&quot;'&quot;</span><span class="Delimiter">);</span>
   <span class="Delimiter">}</span>
 <span class="Delimiter">}</span>
 
diff --git a/html/057immutable.cc.html b/html/057immutable.cc.html
index 4d3b51fc..2c2c3974 100644
--- a/html/057immutable.cc.html
+++ b/html/057immutable.cc.html
@@ -470,9 +470,9 @@ def test-next x:address:test-list <span class="Delimiter">-&gt;</span> y:address
         &amp;&amp; current_ingredient_and_aliases<span class="Delimiter">.</span>find<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">))</span> != current_ingredient_and_aliases<span class="Delimiter">.</span>end<span class="Delimiter">())</span> <span class="Delimiter">{</span>
       string current_product_name = inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>name<span class="Delimiter">;</span>
       <span class="Normal">if</span> <span class="Delimiter">(</span>current_product_name == original_ingredient_name<span class="Delimiter">)</span>
-        raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;cannot modify '&quot;</span> &lt;&lt; current_product_name &lt;&lt; <span class="Constant">&quot;' in instruction '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;' because it's an ingredient of recipe &quot;</span> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; but not also a product</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+        raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;cannot modify '&quot;</span> &lt;&lt; current_product_name &lt;&lt; <span class="Constant">&quot;' in instruction '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;' because it's an ingredient of recipe &quot;</span> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; but not also a product</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
       <span class="Normal">else</span>
-        raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;cannot modify '&quot;</span> &lt;&lt; current_product_name &lt;&lt; <span class="Constant">&quot;' in instruction '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;' because that would modify &quot;</span> &lt;&lt; original_ingredient_name &lt;&lt; <span class="Constant">&quot; which is an ingredient of recipe &quot;</span> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; but not also a product</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+        raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;cannot modify '&quot;</span> &lt;&lt; current_product_name &lt;&lt; <span class="Constant">&quot;' in instruction '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;' because that would modify &quot;</span> &lt;&lt; original_ingredient_name &lt;&lt; <span class="Constant">&quot; which is an ingredient of recipe &quot;</span> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; but not also a product</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
       <span class="Identifier">return</span><span class="Delimiter">;</span>
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
@@ -493,9 +493,9 @@ def test-next x:address:test-list <span class="Delimiter">-&gt;</span> y:address
       <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>operation == PUT || inst<span class="Delimiter">.</span>operation == PUT_INDEX<span class="Delimiter">)</span> <span class="Delimiter">{</span>
         <span class="Normal">if</span> <span class="Delimiter">(</span>current_ingredient_index == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
           <span class="Normal">if</span> <span class="Delimiter">(</span>current_ingredient_name == original_ingredient_name<span class="Delimiter">)</span>
-            raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;cannot modify '&quot;</span> &lt;&lt; current_ingredient_name &lt;&lt; <span class="Constant">&quot;' in instruction '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;' because it's an ingredient of recipe &quot;</span> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; but not also a product</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+            raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;cannot modify '&quot;</span> &lt;&lt; current_ingredient_name &lt;&lt; <span class="Constant">&quot;' in instruction '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;' because it's an ingredient of recipe &quot;</span> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; but not also a product</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
           <span class="Normal">else</span>
-            raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;cannot modify '&quot;</span> &lt;&lt; current_ingredient_name &lt;&lt; <span class="Constant">&quot;' in instruction '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;' because that would modify '&quot;</span> &lt;&lt; original_ingredient_name &lt;&lt; <span class="Constant">&quot;' which is an ingredient of recipe &quot;</span> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; but not also a product</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+            raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;cannot modify '&quot;</span> &lt;&lt; current_ingredient_name &lt;&lt; <span class="Constant">&quot;' in instruction '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;' because that would modify '&quot;</span> &lt;&lt; original_ingredient_name &lt;&lt; <span class="Constant">&quot;' which is an ingredient of recipe &quot;</span> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; but not also a product</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
         <span class="Delimiter">}</span>
       <span class="Delimiter">}</span>
     <span class="Delimiter">}</span>
@@ -503,9 +503,9 @@ def test-next x:address:test-list <span class="Delimiter">-&gt;</span> y:address
       <span class="Comment">// defined recipe</span>
       <span class="Normal">if</span> <span class="Delimiter">(</span>is_modified_in_recipe<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>operation<span class="Delimiter">,</span> current_ingredient_index<span class="Delimiter">,</span> caller<span class="Delimiter">))</span> <span class="Delimiter">{</span>
         <span class="Normal">if</span> <span class="Delimiter">(</span>current_ingredient_name == original_ingredient_name<span class="Delimiter">)</span>
-          raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;cannot modify '&quot;</span> &lt;&lt; current_ingredient_name &lt;&lt; <span class="Constant">&quot;' in instruction '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;' because it's an ingredient of recipe &quot;</span> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; but not also a product</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+          raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;cannot modify '&quot;</span> &lt;&lt; current_ingredient_name &lt;&lt; <span class="Constant">&quot;' in instruction '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;' because it's an ingredient of recipe &quot;</span> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; but not also a product</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
         <span class="Normal">else</span>
-          raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;cannot modify '&quot;</span> &lt;&lt; current_ingredient_name &lt;&lt; <span class="Constant">&quot;' in instruction '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;' because that would modify '&quot;</span> &lt;&lt; original_ingredient_name &lt;&lt; <span class="Constant">&quot;' which is an ingredient of recipe &quot;</span> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; but not also a product</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+          raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;cannot modify '&quot;</span> &lt;&lt; current_ingredient_name &lt;&lt; <span class="Constant">&quot;' in instruction '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;' because that would modify '&quot;</span> &lt;&lt; original_ingredient_name &lt;&lt; <span class="Constant">&quot;' which is an ingredient of recipe &quot;</span> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; <span class="Constant">&quot; but not also a product</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
       <span class="Delimiter">}</span>
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
diff --git a/html/061text.mu.html b/html/061text.mu.html
index 84c7c349..589ca78e 100644
--- a/html/061text.mu.html
+++ b/html/061text.mu.html
@@ -323,8 +323,8 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color
   <span class="Constant">local-scope</span>
   <span class="Constant">load-ingredients</span>
   <span class="Comment"># handle null addresses</span>
-  <span class="muControl">reply-unless</span> a, b
-  <span class="muControl">reply-unless</span> b, a
+  <span class="muControl">return-unless</span> a, b
+  <span class="muControl">return-unless</span> b, a
   <span class="Comment"># result = new character[a.length + b.length]</span>
   a-len:number<span class="Special"> &lt;- </span>length *a
   b-len:number<span class="Special"> &lt;- </span>length *b
diff --git a/html/062rewrite_stash.cc.html b/html/062rewrite_stash.cc.html
index a5a67068..d40916b7 100644
--- a/html/062rewrite_stash.cc.html
+++ b/html/062rewrite_stash.cc.html
@@ -45,6 +45,15 @@ recipe main [
 <span class="traceContains">+transform: {stash_2_0: (&quot;address&quot; &quot;array&quot; &quot;character&quot;)} &lt;- to-text-line {n: &quot;number&quot;}</span>
 <span class="traceContains">+transform: stash {stash_2_0: (&quot;address&quot; &quot;array&quot; &quot;character&quot;)}</span>
 
+<span class="Delimiter">:(scenario rewrite_traces_to_text)</span>
+recipe main [
+  local-scope
+  <span class="Normal">n</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">34</span>
+  trace <span class="Constant">2</span><span class="Delimiter">,</span> [app]<span class="Delimiter">,</span> n
+]
+<span class="traceContains">+transform: {trace_2_2: (&quot;address&quot; &quot;array&quot; &quot;character&quot;)} &lt;- to-text-line {n: &quot;number&quot;}</span>
+<span class="traceContains">+transform: trace {2: &quot;literal&quot;}, {&quot;app&quot;: &quot;literal-string&quot;}, {trace_2_2: (&quot;address&quot; &quot;array&quot; &quot;character&quot;)}</span>
+
 <span class="Comment">//: special case: rewrite attempts to stash contents of most arrays to avoid</span>
 <span class="Comment">//: passing addresses around</span>
 
@@ -65,7 +74,21 @@ recipe main [
 ]
 <span class="traceContains">+transform: stash {n: (&quot;array&quot; &quot;number&quot; &quot;3&quot;)}</span>
 
-<span class="Delimiter">:(before &quot;End Instruction Inserting/Deleting Transforms&quot;)</span>
+<span class="Delimiter">:(scenario rewrite_stashes_of_recipe_header_products)</span>
+container foo [
+  <span class="Normal">x</span>:number
+]
+recipe bar <span class="Delimiter">-&gt;</span> x:foo [
+  local-scope
+  load-ingredients
+  x<span class="Special"> &lt;- </span>merge <span class="Constant">34</span>
+  stash x
+]
+<span class="traceContains">+transform: stash {stash_2_0: (&quot;address&quot; &quot;array&quot; &quot;character&quot;)}</span>
+
+<span class="Comment">//: misplaced; should be in instruction inserting/deleting transforms, but has</span>
+<span class="Comment">//: prerequisites: deduce_types_from_header and check_or_set_types_by_name</span>
+<span class="Delimiter">:(after &quot;Transform.push_back(deduce_types_from_header)&quot;)</span>
 Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>rewrite_stashes_to_text<span class="Delimiter">);</span>
 
 <span class="Delimiter">:(code)</span>
@@ -74,7 +97,6 @@ Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</spa
   trace<span class="Delimiter">(</span><span class="Constant">9991</span><span class="Delimiter">,</span> <span class="Constant">&quot;transform&quot;</span><span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;--- rewrite 'stash' instructions in recipe &quot;</span> &lt;&lt; caller<span class="Delimiter">.</span>name &lt;&lt; end<span class="Delimiter">();</span>
   <span class="Comment">// in recipes without named locations, 'stash' is still not extensible</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>contains_numeric_locations<span class="Delimiter">(</span>caller<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
-  check_or_set_types_by_name<span class="Delimiter">(</span>r<span class="Delimiter">);</span>  <span class="Comment">// prerequisite</span>
   rewrite_stashes_to_text<span class="Delimiter">(</span>caller<span class="Delimiter">);</span>
 <span class="Delimiter">}</span>
 
@@ -84,32 +106,16 @@ Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</spa
     instruction&amp; inst = caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
     <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name == <span class="Constant">&quot;stash&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
       <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-        <span class="Normal">if</span> <span class="Delimiter">(</span>!inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">).</span>type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-          <span class="Comment">// error; will be handled elsewhere</span>
-          <span class="Identifier">continue</span><span class="Delimiter">;</span>
-        <span class="Delimiter">}</span>
-        <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
-        <span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
-        <span class="Comment">// don't try to extend static arrays</span>
-        <span class="Normal">if</span> <span class="Delimiter">(</span>is_static_array<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
-        instruction def<span class="Delimiter">;</span>
-        <span class="Normal">if</span> <span class="Delimiter">(</span>is_lookup_of_address_of_array<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-          def<span class="Delimiter">.</span>name = <span class="Constant">&quot;array-to-text-line&quot;</span><span class="Delimiter">;</span>
-          reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> tmp = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">);</span>
-          drop_one_lookup<span class="Delimiter">(</span>tmp<span class="Delimiter">);</span>
-          def<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>tmp<span class="Delimiter">);</span>
-        <span class="Delimiter">}</span>
-        <span class="Normal">else</span> <span class="Delimiter">{</span>
-          def<span class="Delimiter">.</span>name = <span class="Constant">&quot;to-text-line&quot;</span><span class="Delimiter">;</span>
-          def<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">));</span>
-        <span class="Delimiter">}</span>
         ostringstream ingredient_name<span class="Delimiter">;</span>
         ingredient_name &lt;&lt; <span class="Constant">&quot;stash_&quot;</span> &lt;&lt; i &lt;&lt; <span class="Constant">'_'</span> &lt;&lt; j &lt;&lt; <span class="Constant">&quot;:address:array:character&quot;</span><span class="Delimiter">;</span>
-        def<span class="Delimiter">.</span>products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>reagent<span class="Delimiter">(</span>ingredient_name<span class="Delimiter">.</span>str<span class="Delimiter">()));</span>
-        trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">&quot;transform&quot;</span><span class="Delimiter">)</span> &lt;&lt; to_string<span class="Delimiter">(</span>def<span class="Delimiter">)</span> &lt;&lt; end<span class="Delimiter">();</span>
-        new_instructions<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>def<span class="Delimiter">);</span>
-        inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">).</span>clear<span class="Delimiter">();</span>  <span class="Comment">// reclaim old memory</span>
-        inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">)</span> = reagent<span class="Delimiter">(</span>ingredient_name<span class="Delimiter">.</span>str<span class="Delimiter">());</span>
+        rewrite_stash_to_text<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">),</span> new_instructions<span class="Delimiter">,</span> ingredient_name<span class="Delimiter">.</span>str<span class="Delimiter">());</span>
+      <span class="Delimiter">}</span>
+    <span class="Delimiter">}</span>
+    <span class="Normal">else</span> <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name == <span class="Constant">&quot;trace&quot;</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
+      <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Comment">/*</span><span class="Comment">skip</span><span class="Comment">*/</span><span class="Constant">2</span><span class="Delimiter">;</span> j &lt; SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++j<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+        ostringstream ingredient_name<span class="Delimiter">;</span>
+        ingredient_name &lt;&lt; <span class="Constant">&quot;trace_&quot;</span> &lt;&lt; i &lt;&lt; <span class="Constant">'_'</span> &lt;&lt; j &lt;&lt; <span class="Constant">&quot;:address:array:character&quot;</span><span class="Delimiter">;</span>
+        rewrite_stash_to_text<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">),</span> new_instructions<span class="Delimiter">,</span> ingredient_name<span class="Delimiter">.</span>str<span class="Delimiter">());</span>
       <span class="Delimiter">}</span>
     <span class="Delimiter">}</span>
     trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">&quot;transform&quot;</span><span class="Delimiter">)</span> &lt;&lt; to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; end<span class="Delimiter">();</span>
@@ -118,6 +124,32 @@ Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</spa
   caller<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>swap<span class="Delimiter">(</span>new_instructions<span class="Delimiter">);</span>
 <span class="Delimiter">}</span>
 
+<span class="Comment">// add an instruction to convert reagent 'r' to text in list 'out', then</span>
+<span class="Comment">// replace r with converted text</span>
+<span class="Normal">void</span> rewrite_stash_to_text<span class="Delimiter">(</span>reagent&amp; r<span class="Delimiter">,</span> vector&lt;instruction&gt;&amp; out<span class="Delimiter">,</span> <span class="Normal">const</span> string&amp; tmp_var<span class="Delimiter">)</span> <span class="Delimiter">{</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>!r<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>  <span class="Comment">// error; will be handled elsewhere</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>r<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_string<span class="Delimiter">(</span>r<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+  <span class="Comment">// don't try to extend static arrays</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>is_static_array<span class="Delimiter">(</span>r<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
+  instruction def<span class="Delimiter">;</span>
+  <span class="Normal">if</span> <span class="Delimiter">(</span>is_lookup_of_address_of_array<span class="Delimiter">(</span>r<span class="Delimiter">))</span> <span class="Delimiter">{</span>
+    def<span class="Delimiter">.</span>name = <span class="Constant">&quot;array-to-text-line&quot;</span><span class="Delimiter">;</span>
+    reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> tmp = r<span class="Delimiter">;</span>
+    drop_one_lookup<span class="Delimiter">(</span>tmp<span class="Delimiter">);</span>
+    def<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>tmp<span class="Delimiter">);</span>
+  <span class="Delimiter">}</span>
+  <span class="Normal">else</span> <span class="Delimiter">{</span>
+    def<span class="Delimiter">.</span>name = <span class="Constant">&quot;to-text-line&quot;</span><span class="Delimiter">;</span>
+    def<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>r<span class="Delimiter">);</span>
+  <span class="Delimiter">}</span>
+  def<span class="Delimiter">.</span>products<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>reagent<span class="Delimiter">(</span>tmp_var<span class="Delimiter">));</span>
+  trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">&quot;transform&quot;</span><span class="Delimiter">)</span> &lt;&lt; to_string<span class="Delimiter">(</span>def<span class="Delimiter">)</span> &lt;&lt; end<span class="Delimiter">();</span>
+  out<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>def<span class="Delimiter">);</span>
+  r<span class="Delimiter">.</span>clear<span class="Delimiter">();</span>  <span class="Comment">// reclaim old memory</span>
+  r = reagent<span class="Delimiter">(</span>tmp_var<span class="Delimiter">);</span>
+<span class="Delimiter">}</span>
+
 <span class="Normal">bool</span> is_lookup_of_address_of_array<span class="Delimiter">(</span>reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">-&gt;</span>name != <span class="Constant">&quot;address&quot;</span><span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!canonize_type<span class="Delimiter">(</span>x<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
@@ -153,7 +185,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> TO_TEXT: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'to-text' requires a single ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'to-text' requires a single ingredient, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Comment">// can handle any type</span>
diff --git a/html/066duplex_list.mu.html b/html/065duplex_list.mu.html
index 4fc7cb86..8dad9fc4 100644
--- a/html/066duplex_list.mu.html
+++ b/html/065duplex_list.mu.html
@@ -2,7 +2,7 @@
 <html>
 <head>
 <meta http-equiv="content-type" content="text/html; charset=UTF-8">
-<title>Mu - 066duplex_list.mu</title>
+<title>Mu - 065duplex_list.mu</title>
 <meta name="Generator" content="Vim/7.4">
 <meta name="plugin-version" content="vim7.4_v2">
 <meta name="syntax" content="none">
diff --git a/html/066stream.mu.html b/html/066stream.mu.html
new file mode 100644
index 00000000..28c4814c
--- /dev/null
+++ b/html/066stream.mu.html
@@ -0,0 +1,111 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+<html>
+<head>
+<meta http-equiv="content-type" content="text/html; charset=UTF-8">
+<title>Mu - 066stream.mu</title>
+<meta name="Generator" content="Vim/7.4">
+<meta name="plugin-version" content="vim7.4_v2">
+<meta name="syntax" content="none">
+<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy=">
+<meta name="colorscheme" content="minimal">
+<style type="text/css">
+<!--
+pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; }
+body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color: #080808; }
+* { font-size: 12pt; font-size: 1em; }
+.muRecipe { color: #ff8700; }
+.muData { color: #ffff00; }
+.Delimiter { color: #800080; }
+.Comment { color: #9090ff; }
+.Constant { color: #00a0a0; }
+.Special { color: #c00000; }
+.muControl { color: #c0a020; }
+-->
+</style>
+
+<script type='text/javascript'>
+<!--
+
+-->
+</script>
+</head>
+<body>
+<pre id='vimCodeElement'>
+<span class="Comment"># new type to help incrementally scan arrays</span>
+<span class="muData">container</span> stream:_elem [
+  index:number
+  data:address:array:_elem
+]
+
+<span class="muRecipe">def</span> new-stream s:address:array:_elem<span class="muRecipe"> -&gt; </span>result:address:stream:_elem [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  result<span class="Special"> &lt;- </span>new <span class="Delimiter">{</span>(stream _elem): type<span class="Delimiter">}</span>
+  *result<span class="Special"> &lt;- </span>put *result, <span class="Constant">index:offset</span>, <span class="Constant">0</span>
+  *result<span class="Special"> &lt;- </span>put *result, <span class="Constant">data:offset</span>, s
+]
+
+<span class="muRecipe">def</span> rewind in:address:stream:_elem<span class="muRecipe"> -&gt; </span>in:address:stream:_elem [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  *in<span class="Special"> &lt;- </span>put *in, <span class="Constant">index:offset</span>, <span class="Constant">0</span>
+]
+
+<span class="muRecipe">def</span> read in:address:stream:_elem<span class="muRecipe"> -&gt; </span>result:_elem, empty?:boolean, in:address:stream:_elem [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  empty?<span class="Special"> &lt;- </span>copy <span class="Constant">0/false</span>
+  idx:number<span class="Special"> &lt;- </span>get *in, <span class="Constant">index:offset</span>
+  s:address:array:_elem<span class="Special"> &lt;- </span>get *in, <span class="Constant">data:offset</span>
+  len:number<span class="Special"> &lt;- </span>length *s
+  at-end?:boolean<span class="Special"> &lt;- </span>greater-or-equal idx len
+  <span class="Delimiter">{</span>
+    <span class="muControl">break-unless</span> at-end?
+    empty-result:address:_elem<span class="Special"> &lt;- </span>new <span class="Constant">_elem:type</span>
+    <span class="muControl">return</span> *empty-result, <span class="Constant">1/true</span>
+  <span class="Delimiter">}</span>
+  result<span class="Special"> &lt;- </span>index *s, idx
+  idx<span class="Special"> &lt;- </span>add idx, <span class="Constant">1</span>
+  *in<span class="Special"> &lt;- </span>put *in, <span class="Constant">index:offset</span>, idx
+]
+
+<span class="muRecipe">def</span> peek in:address:stream:_elem<span class="muRecipe"> -&gt; </span>result:_elem, empty?:boolean [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  empty?:boolean<span class="Special"> &lt;- </span>copy <span class="Constant">0/false</span>
+  idx:number<span class="Special"> &lt;- </span>get *in, <span class="Constant">index:offset</span>
+  s:address:array:character<span class="Special"> &lt;- </span>get *in, <span class="Constant">data:offset</span>
+  len:number<span class="Special"> &lt;- </span>length *s
+  at-end?:boolean<span class="Special"> &lt;- </span>greater-or-equal idx len
+  <span class="Delimiter">{</span>
+    <span class="muControl">break-unless</span> at-end?
+    empty-result:address:_elem<span class="Special"> &lt;- </span>new <span class="Constant">_elem:type</span>
+    <span class="muControl">return</span> *empty-result, <span class="Constant">1/true</span>
+  <span class="Delimiter">}</span>
+  result<span class="Special"> &lt;- </span>index *s, idx
+]
+
+<span class="muRecipe">def</span> read-line in:address:stream:character<span class="muRecipe"> -&gt; </span>result:address:array:character, in:address:stream:character [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  idx:number<span class="Special"> &lt;- </span>get *in, <span class="Constant">index:offset</span>
+  s:address:array:character<span class="Special"> &lt;- </span>get *in, <span class="Constant">data:offset</span>
+  next-idx:number<span class="Special"> &lt;- </span>find-next s, <span class="Constant">10/newline</span>, idx
+  result<span class="Special"> &lt;- </span>copy-range s, idx, next-idx
+  idx<span class="Special"> &lt;- </span>add next-idx, <span class="Constant">1</span>  <span class="Comment"># skip newline</span>
+  <span class="Comment"># write back</span>
+  *in<span class="Special"> &lt;- </span>put *in, <span class="Constant">index:offset</span>, idx
+]
+
+<span class="muRecipe">def</span> end-of-stream? in:address:stream:_elem<span class="muRecipe"> -&gt; </span>result:boolean [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  idx:number<span class="Special"> &lt;- </span>get *in, <span class="Constant">index:offset</span>
+  s:address:array:_elem<span class="Special"> &lt;- </span>get *in, <span class="Constant">data:offset</span>
+  len:number<span class="Special"> &lt;- </span>length *s
+  result<span class="Special"> &lt;- </span>greater-or-equal idx, len
+]
+</pre>
+</body>
+</html>
+<!-- vim: set foldmethod=manual : -->
diff --git a/html/065random.cc.html b/html/067random.cc.html
index b9fa34be..28cd2bf5 100644
--- a/html/065random.cc.html
+++ b/html/067random.cc.html
@@ -2,7 +2,7 @@
 <html>
 <head>
 <meta http-equiv="content-type" content="text/html; charset=UTF-8">
-<title>Mu - 065random.cc</title>
+<title>Mu - 067random.cc</title>
 <meta name="Generator" content="Vim/7.4">
 <meta name="plugin-version" content="vim7.4_v2">
 <meta name="syntax" content="cpp">
@@ -34,15 +34,15 @@ body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color
 <body>
 <pre id='vimCodeElement'>
 <span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
-RANDOM<span class="Delimiter">,</span>
+REAL_RANDOM<span class="Delimiter">,</span>
 <span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
-put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;random&quot;</span><span class="Delimiter">,</span> RANDOM<span class="Delimiter">);</span>
+put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> <span class="Constant">&quot;real-random&quot;</span><span class="Delimiter">,</span> REAL_RANDOM<span class="Delimiter">);</span>
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
-<span class="Normal">case</span> RANDOM: <span class="Delimiter">{</span>
+<span class="Normal">case</span> REAL_RANDOM: <span class="Delimiter">{</span>
   <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span class="Delimiter">}</span>
 <span class="Delimiter">:(before &quot;End Primitive Recipe Implementations&quot;)</span>
-<span class="Normal">case</span> RANDOM: <span class="Delimiter">{</span>
+<span class="Normal">case</span> REAL_RANDOM: <span class="Delimiter">{</span>
   <span class="Comment">// todo: limited range of numbers, might be imperfectly random</span>
   <span class="Comment">// todo: thread state in extra ingredients and products</span>
   products<span class="Delimiter">.</span>resize<span class="Delimiter">(</span><span class="Constant">1</span><span class="Delimiter">);</span>
@@ -71,7 +71,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> ROUND: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'round' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'round' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
diff --git a/html/067stream.mu.html b/html/067stream.mu.html
deleted file mode 100644
index 6bafe8b4..00000000
--- a/html/067stream.mu.html
+++ /dev/null
@@ -1,75 +0,0 @@
-<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
-<html>
-<head>
-<meta http-equiv="content-type" content="text/html; charset=UTF-8">
-<title>Mu - 067stream.mu</title>
-<meta name="Generator" content="Vim/7.4">
-<meta name="plugin-version" content="vim7.4_v2">
-<meta name="syntax" content="none">
-<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy=">
-<meta name="colorscheme" content="minimal">
-<style type="text/css">
-<!--
-pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; }
-body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color: #080808; }
-* { font-size: 12pt; font-size: 1em; }
-.muRecipe { color: #ff8700; }
-.muData { color: #ffff00; }
-.Comment { color: #9090ff; }
-.Constant { color: #00a0a0; }
-.Special { color: #c00000; }
--->
-</style>
-
-<script type='text/javascript'>
-<!--
-
--->
-</script>
-</head>
-<body>
-<pre id='vimCodeElement'>
-<span class="Comment"># new type to help incrementally read texts (arrays of characters)</span>
-<span class="muData">container</span> stream [
-  index:number
-  data:address:array:character
-]
-
-<span class="muRecipe">def</span> new-stream s:address:array:character<span class="muRecipe"> -&gt; </span>result:address:stream [
-  <span class="Constant">local-scope</span>
-  <span class="Constant">load-ingredients</span>
-  result<span class="Special"> &lt;- </span>new <span class="Constant">stream:type</span>
-  *result<span class="Special"> &lt;- </span>put *result, <span class="Constant">index:offset</span>, <span class="Constant">0</span>
-  *result<span class="Special"> &lt;- </span>put *result, <span class="Constant">data:offset</span>, s
-]
-
-<span class="muRecipe">def</span> rewind-stream in:address:stream<span class="muRecipe"> -&gt; </span>in:address:stream [
-  <span class="Constant">local-scope</span>
-  <span class="Constant">load-ingredients</span>
-  *in<span class="Special"> &lt;- </span>put *in, <span class="Constant">index:offset</span>, <span class="Constant">0</span>
-]
-
-<span class="muRecipe">def</span> read-line in:address:stream<span class="muRecipe"> -&gt; </span>result:address:array:character, in:address:stream [
-  <span class="Constant">local-scope</span>
-  <span class="Constant">load-ingredients</span>
-  idx:number<span class="Special"> &lt;- </span>get *in, <span class="Constant">index:offset</span>
-  s:address:array:character<span class="Special"> &lt;- </span>get *in, <span class="Constant">data:offset</span>
-  next-idx:number<span class="Special"> &lt;- </span>find-next s, <span class="Constant">10/newline</span>, idx
-  result<span class="Special"> &lt;- </span>copy-range s, idx, next-idx
-  idx<span class="Special"> &lt;- </span>add next-idx, <span class="Constant">1</span>  <span class="Comment"># skip newline</span>
-  <span class="Comment"># write back</span>
-  *in<span class="Special"> &lt;- </span>put *in, <span class="Constant">index:offset</span>, idx
-]
-
-<span class="muRecipe">def</span> end-of-stream? in:address:stream<span class="muRecipe"> -&gt; </span>result:boolean [
-  <span class="Constant">local-scope</span>
-  <span class="Constant">load-ingredients</span>
-  idx:number<span class="Special"> &lt;- </span>get *in, <span class="Constant">index:offset</span>
-  s:address:array:character<span class="Special"> &lt;- </span>get *in, <span class="Constant">data:offset</span>
-  len:number<span class="Special"> &lt;- </span>length *s
-  result<span class="Special"> &lt;- </span>greater-or-equal idx, len
-]
-</pre>
-</body>
-</html>
-<!-- vim: set foldmethod=manual : -->
diff --git a/html/068random.mu.html b/html/068random.mu.html
new file mode 100644
index 00000000..192dcbab
--- /dev/null
+++ b/html/068random.mu.html
@@ -0,0 +1,92 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+<html>
+<head>
+<meta http-equiv="content-type" content="text/html; charset=UTF-8">
+<title>Mu - 068random.mu</title>
+<meta name="Generator" content="Vim/7.4">
+<meta name="plugin-version" content="vim7.4_v2">
+<meta name="syntax" content="none">
+<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy=">
+<meta name="colorscheme" content="minimal">
+<style type="text/css">
+<!--
+pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; }
+body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color: #080808; }
+* { font-size: 12pt; font-size: 1em; }
+.muRecipe { color: #ff8700; }
+.muScenario { color: #00af00; }
+.Delimiter { color: #800080; }
+.Comment { color: #9090ff; }
+.Constant { color: #00a0a0; }
+.Special { color: #c00000; }
+.muControl { color: #c0a020; }
+-->
+</style>
+
+<script type='text/javascript'>
+<!--
+
+-->
+</script>
+</head>
+<body>
+<pre id='vimCodeElement'>
+<span class="muRecipe">def</span> random generator:address:stream:number<span class="muRecipe"> -&gt; </span>result:number, fail?:boolean, generator:address:stream:number [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  <span class="Delimiter">{</span>
+    <span class="muControl">break-if</span> generator
+    <span class="Comment"># generator is 0? use real random-number generator</span>
+    result<span class="Special"> &lt;- </span>real-random
+    <span class="muControl">reply</span> result, <span class="Constant">0/false</span>
+  <span class="Delimiter">}</span>
+  result, fail?, generator<span class="Special"> &lt;- </span>read generator
+]
+
+<span class="Comment"># helper for tests</span>
+<span class="muRecipe">def</span> assume-random-numbers<span class="muRecipe"> -&gt; </span>result:address:stream:number [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  <span class="Comment"># compute result-len, space to allocate in result</span>
+  result-len:number<span class="Special"> &lt;- </span>copy <span class="Constant">0</span>
+  <span class="Delimiter">{</span>
+    _, arg-received?:boolean<span class="Special"> &lt;- </span><span class="Constant">next-ingredient</span>
+    <span class="muControl">break-unless</span> arg-received?
+    result-len<span class="Special"> &lt;- </span>add result-len, <span class="Constant">1</span>
+    <span class="muControl">loop</span>
+  <span class="Delimiter">}</span>
+  <span class="Constant">rewind-ingredients</span>
+  result-data:address:array:number<span class="Special"> &lt;- </span>new <span class="Constant">number:type</span>, result-len
+  idx:number<span class="Special"> &lt;- </span>copy <span class="Constant">0</span>
+  <span class="Delimiter">{</span>
+    curr:number, arg-received?:boolean<span class="Special"> &lt;- </span><span class="Constant">next-ingredient</span>
+    <span class="muControl">break-unless</span> arg-received?
+    *result-data<span class="Special"> &lt;- </span>put-index *result-data, idx, curr
+    idx<span class="Special"> &lt;- </span>add idx, <span class="Constant">1</span>
+    <span class="muControl">loop</span>
+  <span class="Delimiter">}</span>
+  result<span class="Special"> &lt;- </span>new-stream result-data
+]
+
+<span class="muScenario">scenario</span> random-numbers-in-scenario [
+  <span class="Constant">local-scope</span>
+  source:address:stream:number<span class="Special"> &lt;- </span>assume-random-numbers <span class="Constant">34</span>, <span class="Constant">35</span>, <span class="Constant">37</span>
+  <span class="Constant">1</span>:number/<span class="Special">raw</span>, <span class="Constant">2</span>:boolean/<span class="Special">raw &lt;- </span>random source
+  <span class="Constant">3</span>:number/<span class="Special">raw</span>, <span class="Constant">4</span>:boolean/<span class="Special">raw &lt;- </span>random source
+  <span class="Constant">5</span>:number/<span class="Special">raw</span>, <span class="Constant">6</span>:boolean/<span class="Special">raw &lt;- </span>random source
+  <span class="Constant">7</span>:number/<span class="Special">raw</span>, <span class="Constant">8</span>:boolean/<span class="Special">raw &lt;- </span>random source
+  memory-should-contain [
+    <span class="Constant">1</span><span class="Special"> &lt;- </span><span class="Constant">34</span>
+    <span class="Constant">2</span><span class="Special"> &lt;- </span><span class="Constant">0</span>  <span class="Comment"># everything went well</span>
+    <span class="Constant">3</span><span class="Special"> &lt;- </span><span class="Constant">35</span>
+    <span class="Constant">4</span><span class="Special"> &lt;- </span><span class="Constant">0</span>  <span class="Comment"># everything went well</span>
+    <span class="Constant">5</span><span class="Special"> &lt;- </span><span class="Constant">37</span>
+    <span class="Constant">6</span><span class="Special"> &lt;- </span><span class="Constant">0</span>  <span class="Comment"># everything went well</span>
+    <span class="Constant">7</span><span class="Special"> &lt;- </span><span class="Constant">0</span>  <span class="Comment"># empty result</span>
+    <span class="Constant">8</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># end of stream</span>
+  ]
+]
+</pre>
+</body>
+</html>
+<!-- vim: set foldmethod=manual : -->
diff --git a/html/068hash.cc.html b/html/069hash.cc.html
index b2e810df..ee1776d1 100644
--- a/html/068hash.cc.html
+++ b/html/069hash.cc.html
@@ -2,7 +2,7 @@
 <html>
 <head>
 <meta http-equiv="content-type" content="text/html; charset=UTF-8">
-<title>Mu - 068hash.cc</title>
+<title>Mu - 069hash.cc</title>
 <meta name="Generator" content="Vim/7.4">
 <meta name="plugin-version" content="vim7.4_v2">
 <meta name="syntax" content="cpp">
@@ -50,7 +50,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> HASH: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'hash' takes exactly one ingredient rather than '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'hash' takes exactly one ingredient rather than '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Identifier">break</span><span class="Delimiter">;</span>
@@ -386,7 +386,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> HASH_OLD: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'hash_old' takes exactly one ingredient rather than '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'hash_old' takes exactly one ingredient rather than '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
diff --git a/html/069table.mu.html b/html/070table.mu.html
index 45ec2f16..baa33458 100644
--- a/html/069table.mu.html
+++ b/html/070table.mu.html
@@ -2,7 +2,7 @@
 <html>
 <head>
 <meta http-equiv="content-type" content="text/html; charset=UTF-8">
-<title>Mu - 069table.mu</title>
+<title>Mu - 070table.mu</title>
 <meta name="Generator" content="Vim/7.4">
 <meta name="plugin-version" content="vim7.4_v2">
 <meta name="syntax" content="none">
diff --git a/html/070recipe.cc.html b/html/071recipe.cc.html
index d1901cfb..13241cf5 100644
--- a/html/070recipe.cc.html
+++ b/html/071recipe.cc.html
@@ -2,7 +2,7 @@
 <html>
 <head>
 <meta http-equiv="content-type" content="text/html; charset=UTF-8">
-<title>Mu - 070recipe.cc</title>
+<title>Mu - 071recipe.cc</title>
 <meta name="Generator" content="Vim/7.4">
 <meta name="plugin-version" content="vim7.4_v2">
 <meta name="syntax" content="cpp">
@@ -155,12 +155,12 @@ Transform<span class="Delimiter">.</span>push_back<span class="Delimiter">(</spa
     <span class="Normal">if</span> <span class="Delimiter">(</span>!callee_header<span class="Delimiter">.</span>has_header<span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
     <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Comment">/*</span><span class="Comment">skip callee</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">;</span> i &lt; min<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">),</span> SIZE<span class="Delimiter">(</span>callee_header<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span>+<span class="Comment">/*</span><span class="Comment">skip callee</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
       <span class="Normal">if</span> <span class="Delimiter">(</span>!types_coercible<span class="Delimiter">(</span>callee_header<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i-<span class="Comment">/*</span><span class="Comment">skip callee</span><span class="Comment">*/</span><span class="Constant">1</span><span class="Delimiter">),</span> inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span>
-        raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;ingredient &quot;</span> &lt;&lt; i-<span class="Comment">/*</span><span class="Comment">skip callee</span><span class="Comment">*/</span><span class="Constant">1</span> &lt;&lt; <span class="Constant">&quot; has the wrong type at '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+        raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;ingredient &quot;</span> &lt;&lt; i-<span class="Comment">/*</span><span class="Comment">skip callee</span><span class="Comment">*/</span><span class="Constant">1</span> &lt;&lt; <span class="Constant">&quot; has the wrong type at '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Delimiter">}</span>
     <span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">long</span> <span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i &lt; min<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">),</span> SIZE<span class="Delimiter">(</span>callee_header<span class="Delimiter">.</span>products<span class="Delimiter">));</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
       <span class="Normal">if</span> <span class="Delimiter">(</span>is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
       <span class="Normal">if</span> <span class="Delimiter">(</span>!types_coercible<span class="Delimiter">(</span>callee_header<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span>
-        raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;product &quot;</span> &lt;&lt; i &lt;&lt; <span class="Constant">&quot; has the wrong type at '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+        raise &lt;&lt; maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;product &quot;</span> &lt;&lt; i &lt;&lt; <span class="Constant">&quot; has the wrong type at '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Delimiter">}</span>
   <span class="Delimiter">}</span>
 <span class="Delimiter">}</span>
@@ -269,7 +269,7 @@ def main [
   <span class="Delimiter">}</span>
 ]
 <span class="Comment"># error should be as if foo is not a recipe</span>
-<span class="traceContains">+error: main: missing type for foo in 'break-if {foo: ()}'</span>
+<span class="traceContains">+error: main: missing type for foo in 'break-if foo'</span>
 
 <span class="Delimiter">:(before &quot;End JUMP_IF Checks&quot;)</span>
 check_for_recipe_literals<span class="Delimiter">(</span>inst<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">));</span>
diff --git a/html/071scheduler.cc.html b/html/072scheduler.cc.html
index 18fc91b8..cf588699 100644
--- a/html/071scheduler.cc.html
+++ b/html/072scheduler.cc.html
@@ -2,7 +2,7 @@
 <html>
 <head>
 <meta http-equiv="content-type" content="text/html; charset=UTF-8">
-<title>Mu - 071scheduler.cc</title>
+<title>Mu - 072scheduler.cc</title>
 <meta name="Generator" content="Vim/7.4">
 <meta name="plugin-version" content="vim7.4_v2">
 <meta name="syntax" content="cpp">
@@ -378,7 +378,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> ROUTINE_STATE: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'routine-state' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'routine-state' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -411,7 +411,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> RESTART: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'restart' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'restart' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -439,7 +439,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> STOP: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'stop' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'stop' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -513,13 +513,11 @@ DISCONTINUED<span class="Delimiter">,</span>
 <span class="Normal">if</span> <span class="Delimiter">(</span>Passed &amp;&amp; any_routines_with_error<span class="Delimiter">())</span> <span class="Delimiter">{</span>
   Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
   raise &lt;&lt; <span class="Constant">&quot;some routines died with errors</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
-  ++Num_failures<span class="Delimiter">;</span>
 <span class="Delimiter">}</span>
 <span class="Delimiter">:(before &quot;End Mu Test Teardown&quot;)</span>
 <span class="Normal">if</span> <span class="Delimiter">(</span>Passed &amp;&amp; any_routines_with_error<span class="Delimiter">())</span> <span class="Delimiter">{</span>
   Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
   raise &lt;&lt; Current_scenario<span class="Delimiter">-&gt;</span>name &lt;&lt; <span class="Constant">&quot;: some routines died with errors</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
-  ++Num_failures<span class="Delimiter">;</span>
 <span class="Delimiter">}</span>
 
 <span class="Delimiter">:(code)</span>
@@ -543,7 +541,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> LIMIT_TIME: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'limit-time' requires exactly two ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'limit-time' requires exactly two ingredient, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -573,7 +571,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End routine Constructor&quot;)</span>
 ninstrs = <span class="Constant">0</span><span class="Delimiter">;</span>
 <span class="Delimiter">:(after &quot;stop_running_current_routine:&quot;)</span>
-Current_routine<span class="Delimiter">-&gt;</span>ninstrs = Current_routine<span class="Delimiter">-&gt;</span>ninstrs + ninstrs<span class="Delimiter">;</span>
+Current_routine<span class="Delimiter">-&gt;</span>ninstrs += ninstrs<span class="Delimiter">;</span>
 <span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
 NUMBER_OF_INSTRUCTIONS<span class="Delimiter">,</span>
 <span class="Delimiter">:(before &quot;End Primitive Recipe Numbers&quot;)</span>
@@ -581,7 +579,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> NUMBER_OF_INSTRUCTIONS: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'number-of-instructions' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'number-of-instructions' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -605,27 +603,24 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
   <span class="Identifier">break</span><span class="Delimiter">;</span>
 <span class="Delimiter">}</span>
 
-<span class="SalientComment">//:: make sure that each routine gets a different alloc to start</span>
-
-<span class="Delimiter">:(scenario new_concurrent)</span>
+<span class="Delimiter">:(scenario number_of_instructions)</span>
 def f1 [
-  start-running f2
-  <span class="Constant">1</span>:address:number/<span class="Special">raw &lt;- </span><span class="Normal">new</span> number:type
-  <span class="Comment"># wait for f2 to complete</span>
+  <span class="Constant">10</span>:number/child-id<span class="Special"> &lt;- </span>start-running f2
   <span class="Delimiter">{</span>
-    loop-unless <span class="Constant">4</span>:number/<span class="Special">raw</span>
+    loop-unless <span class="Constant">20</span>:number
   <span class="Delimiter">}</span>
+  <span class="Constant">11</span>:number<span class="Special"> &lt;- </span>number-of-instructions <span class="Constant">10</span>:number
 ]
 def f2 [
-  <span class="Constant">2</span>:address:number/<span class="Special">raw &lt;- </span><span class="Normal">new</span> number:type
-  <span class="Comment"># hack: assumes scheduler implementation</span>
-  <span class="Constant">3</span>:boolean/<span class="Special">raw &lt;- </span>equal <span class="Constant">1</span>:address:number/<span class="Special">raw</span><span class="Delimiter">,</span> <span class="Constant">2</span>:address:number/<span class="Special">raw</span>
-  <span class="Comment"># signal f2 complete</span>
-  <span class="Constant">4</span>:number/<span class="Special">raw &lt;- </span>copy <span class="Constant">1</span>
+  <span class="Comment"># 2 instructions worth of work</span>
+  <span class="Constant">1</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">34</span>
+  <span class="Constant">20</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">1</span>
 ]
-<span class="traceContains">+mem: storing 0 in location 3</span>
+<span class="Comment"># f2 runs an extra instruction for the implicit return added by the</span>
+<span class="Comment"># fill_in_reply_ingredients transform</span>
+<span class="traceContains">+mem: storing 3 in location 11</span>
 
-<span class="Delimiter">:(scenario number_of_instructions)</span>
+<span class="Delimiter">:(scenario number_of_instructions_across_multiple_scheduling_intervals)</span>
 <span class="Special">% Scheduling_interval = 1;</span>
 def f1 [
   <span class="Constant">10</span>:number/child-id<span class="Special"> &lt;- </span>start-running f2
@@ -636,7 +631,6 @@ def f1 [
 ]
 def f2 [
   <span class="Comment"># 4 instructions worth of work</span>
-  <span class="Comment"># Should take 2 scheduling intervals</span>
   <span class="Constant">1</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">34</span>
   <span class="Constant">2</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">1</span>
   <span class="Constant">2</span>:number<span class="Special"> &lt;- </span>copy <span class="Constant">3</span>
@@ -645,6 +639,26 @@ def f2 [
 <span class="Comment"># f2 runs an extra instruction for the implicit return added by the</span>
 <span class="Comment"># fill_in_reply_ingredients transform</span>
 <span class="traceContains">+mem: storing 5 in location 11</span>
+
+<span class="SalientComment">//:: make sure that each routine gets a different alloc to start</span>
+
+<span class="Delimiter">:(scenario new_concurrent)</span>
+def f1 [
+  start-running f2
+  <span class="Constant">1</span>:address:number/<span class="Special">raw &lt;- </span><span class="Normal">new</span> number:type
+  <span class="Comment"># wait for f2 to complete</span>
+  <span class="Delimiter">{</span>
+    loop-unless <span class="Constant">4</span>:number/<span class="Special">raw</span>
+  <span class="Delimiter">}</span>
+]
+def f2 [
+  <span class="Constant">2</span>:address:number/<span class="Special">raw &lt;- </span><span class="Normal">new</span> number:type
+  <span class="Comment"># hack: assumes scheduler implementation</span>
+  <span class="Constant">3</span>:boolean/<span class="Special">raw &lt;- </span>equal <span class="Constant">1</span>:address:number/<span class="Special">raw</span><span class="Delimiter">,</span> <span class="Constant">2</span>:address:number/<span class="Special">raw</span>
+  <span class="Comment"># signal f2 complete</span>
+  <span class="Constant">4</span>:number/<span class="Special">raw &lt;- </span>copy <span class="Constant">1</span>
+]
+<span class="traceContains">+mem: storing 0 in location 3</span>
 </pre>
 </body>
 </html>
diff --git a/html/072wait.cc.html b/html/073wait.cc.html
index b07d3272..dffb1cf5 100644
--- a/html/072wait.cc.html
+++ b/html/073wait.cc.html
@@ -2,7 +2,7 @@
 <html>
 <head>
 <meta http-equiv="content-type" content="text/html; charset=UTF-8">
-<title>Mu - 072wait.cc</title>
+<title>Mu - 073wait.cc</title>
 <meta name="Generator" content="Vim/7.4">
 <meta name="plugin-version" content="vim7.4_v2">
 <meta name="syntax" content="cpp">
@@ -67,13 +67,11 @@ waiting_on_location = old_value_of_waiting_location = <span class="Constant">0</
 <span class="Normal">if</span> <span class="Delimiter">(</span>Passed &amp;&amp; any_routines_waiting<span class="Delimiter">())</span> <span class="Delimiter">{</span>
   Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
   raise &lt;&lt; Current_scenario<span class="Delimiter">-&gt;</span>name &lt;&lt; <span class="Constant">&quot;: deadlock!</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
-  ++Num_failures<span class="Delimiter">;</span>
 <span class="Delimiter">}</span>
 <span class="Delimiter">:(before &quot;End Test Teardown&quot;)</span>
 <span class="Normal">if</span> <span class="Delimiter">(</span>Passed &amp;&amp; any_routines_with_error<span class="Delimiter">())</span> <span class="Delimiter">{</span>
   Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
   raise &lt;&lt; <span class="Constant">&quot;some routines died with errors</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
-  ++Num_failures<span class="Delimiter">;</span>
 <span class="Delimiter">}</span>
 <span class="Delimiter">:(code)</span>
 <span class="Normal">bool</span> any_routines_waiting<span class="Delimiter">()</span> <span class="Delimiter">{</span>
@@ -93,7 +91,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> WAIT_FOR_LOCATION: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'wait-for-location' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'wait-for-location' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_location<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -143,7 +141,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> GET_LOCATION: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'get-location' expects exactly 2 ingredients in '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'get-location' expects exactly 2 ingredients in '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> base = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">);</span>
@@ -294,7 +292,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> WAIT_FOR_ROUTINE: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'wait-for-routine' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'wait-for-routine' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
diff --git a/html/073deep_copy.cc.html b/html/074deep_copy.cc.html
index 9dcb057a..1a352a85 100644
--- a/html/073deep_copy.cc.html
+++ b/html/074deep_copy.cc.html
@@ -2,7 +2,7 @@
 <html>
 <head>
 <meta http-equiv="content-type" content="text/html; charset=UTF-8">
-<title>Mu - 073deep_copy.cc</title>
+<title>Mu - 074deep_copy.cc</title>
 <meta name="Generator" content="Vim/7.4">
 <meta name="plugin-version" content="vim7.4_v2">
 <meta name="syntax" content="cpp">
@@ -229,15 +229,15 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> DEEP_COPY: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'deep-copy' takes exactly one ingredient rather than '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'deep-copy' takes exactly one ingredient rather than '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'deep-copy' takes exactly one ingredient rather than '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'deep-copy' takes exactly one ingredient rather than '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!types_strictly_match<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">),</span> inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'deep-copy' requires its ingredient and product to be the same type, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'deep-copy' requires its ingredient and product to be the same type, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Identifier">break</span><span class="Delimiter">;</span>
diff --git a/html/074channel.mu.html b/html/075channel.mu.html
index e2214f12..9583336a 100644
--- a/html/074channel.mu.html
+++ b/html/075channel.mu.html
@@ -2,7 +2,7 @@
 <html>
 <head>
 <meta http-equiv="content-type" content="text/html; charset=UTF-8">
-<title>Mu - 074channel.mu</title>
+<title>Mu - 075channel.mu</title>
 <meta name="Generator" content="Vim/7.4">
 <meta name="plugin-version" content="vim7.4_v2">
 <meta name="syntax" content="none">
diff --git a/html/080display.cc.html b/html/080display.cc.html
index 173bd7ae..d85a3f5b 100644
--- a/html/080display.cc.html
+++ b/html/080display.cc.html
@@ -133,7 +133,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> PRINT_CHARACTER_TO_DISPLAY: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'print-character-to-display' requires at least one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'print-character-to-display' requires at least one ingredient, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -219,7 +219,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> MOVE_CURSOR_ON_DISPLAY: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'move-cursor-on-display' requires two ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'move-cursor-on-display' requires two ingredients, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_number<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
diff --git a/html/082scenario_screen.cc.html b/html/082scenario_screen.cc.html
index 54980d17..8a204b48 100644
--- a/html/082scenario_screen.cc.html
+++ b/html/082scenario_screen.cc.html
@@ -191,6 +191,13 @@ Name[r][<span class="Constant">&quot;screen&quot;</span>] = SCREEN<span class="D
   curr<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>set_value<span class="Delimiter">(</span>SCREEN<span class="Delimiter">);</span>
 <span class="Delimiter">}</span>
 
+<span class="Delimiter">:(scenario assume_screen_shows_up_in_errors)</span>
+<span class="Special">% Hide_errors = true;</span>
+scenario error-in-assume-screen [
+  assume-screen width<span class="Delimiter">,</span> <span class="Constant">5</span>
+]
+<span class="traceContains">+error: scenario_error-in-assume-screen: missing type for 'width' in 'assume-screen width, 5'</span>
+
 <span class="Comment">//: screen-should-contain is a regular instruction</span>
 <span class="Delimiter">:(before &quot;End Primitive Recipe Declarations&quot;)</span>
 SCREEN_SHOULD_CONTAIN<span class="Delimiter">,</span>
@@ -277,10 +284,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
           <span class="Comment">// just testing check_screen</span>
           raise &lt;&lt; <span class="Constant">&quot;expected screen location (&quot;</span> &lt;&lt; row &lt;&lt; <span class="Constant">&quot;, &quot;</span> &lt;&lt; column &lt;&lt; <span class="Constant">&quot;) to be in color &quot;</span> &lt;&lt; color &lt;&lt; <span class="Constant">&quot; instead of &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> addr+cell_color_offset<span class="Delimiter">))</span> &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
         <span class="Delimiter">}</span>
-        <span class="Normal">if</span> <span class="Delimiter">(</span>!Scenario_testing_scenario<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-          Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
-          ++Num_failures<span class="Delimiter">;</span>
-        <span class="Delimiter">}</span>
+        <span class="Normal">if</span> <span class="Delimiter">(</span>!Scenario_testing_scenario<span class="Delimiter">)</span> Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
         <span class="Identifier">return</span><span class="Delimiter">;</span>
       <span class="Delimiter">}</span>
 
@@ -308,10 +312,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
         <span class="Comment">// just testing check_screen</span>
         raise &lt;&lt; <span class="Constant">&quot;expected screen location (&quot;</span> &lt;&lt; row &lt;&lt; <span class="Constant">&quot;, &quot;</span> &lt;&lt; column &lt;&lt; <span class="Constant">&quot;) to contain &quot;</span> &lt;&lt; curr &lt;&lt; expected_pretty &lt;&lt; color_phrase<span class="Delimiter">.</span>str<span class="Delimiter">()</span> &lt;&lt; <span class="Constant">&quot; instead of &quot;</span> &lt;&lt; no_scientific<span class="Delimiter">(</span>get_or_insert<span class="Delimiter">(</span>Memory<span class="Delimiter">,</span> addr<span class="Delimiter">))</span> &lt;&lt; actual_pretty &lt;&lt; <span class="cSpecial">'\n'</span> &lt;&lt; end<span class="Delimiter">();</span>
       <span class="Delimiter">}</span>
-      <span class="Normal">if</span> <span class="Delimiter">(</span>!Scenario_testing_scenario<span class="Delimiter">)</span> <span class="Delimiter">{</span>
-        Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
-        ++Num_failures<span class="Delimiter">;</span>
-      <span class="Delimiter">}</span>
+      <span class="Normal">if</span> <span class="Delimiter">(</span>!Scenario_testing_scenario<span class="Delimiter">)</span> Passed = <span class="Constant">false</span><span class="Delimiter">;</span>
       <span class="Identifier">return</span><span class="Delimiter">;</span>
     <span class="Delimiter">}</span>
     assert<span class="Delimiter">(</span>cursor<span class="Delimiter">.</span>get<span class="Delimiter">()</span> == <span class="Constant">'.'</span><span class="Delimiter">);</span>
diff --git a/html/091run_interactive.cc.html b/html/091run_interactive.cc.html
index 6633d65e..85cbf97d 100644
--- a/html/091run_interactive.cc.html
+++ b/html/091run_interactive.cc.html
@@ -64,7 +64,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> RUN_INTERACTIVE: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'run-interactive' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'run-interactive' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
@@ -470,7 +470,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> RELOAD: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'reload' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'reload' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>!is_mu_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
diff --git a/html/092persist.cc.html b/html/092persist.cc.html
index ec224cf5..87682997 100644
--- a/html/092persist.cc.html
+++ b/html/092persist.cc.html
@@ -41,7 +41,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> RESTORE: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'restore' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'restore' requires exactly one ingredient, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   string filename<span class="Delimiter">;</span>
@@ -105,7 +105,7 @@ put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span
 <span class="Delimiter">:(before &quot;End Primitive Recipe Checks&quot;)</span>
 <span class="Normal">case</span> SAVE: <span class="Delimiter">{</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span> != <span class="Constant">2</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
-    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'save' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; to_original_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
+    raise &lt;&lt; maybe<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">).</span>name<span class="Delimiter">)</span> &lt;&lt; <span class="Constant">&quot;'save' requires exactly two ingredients, but got '&quot;</span> &lt;&lt; inst<span class="Delimiter">.</span>original_string &lt;&lt; <span class="Constant">&quot;'</span><span class="cSpecial">\n</span><span class="Constant">&quot;</span> &lt;&lt; end<span class="Delimiter">();</span>
     <span class="Identifier">break</span><span class="Delimiter">;</span>
   <span class="Delimiter">}</span>
   <span class="Normal">if</span> <span class="Delimiter">(</span>is_literal_string<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">)))</span> <span class="Delimiter">{</span>
diff --git a/html/lambda-to-mu.mu.html b/html/lambda-to-mu.mu.html
new file mode 100644
index 00000000..0478a1b7
--- /dev/null
+++ b/html/lambda-to-mu.mu.html
@@ -0,0 +1,605 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
+<html>
+<head>
+<meta http-equiv="content-type" content="text/html; charset=UTF-8">
+<title>Mu - lambda-to-mu.mu</title>
+<meta name="Generator" content="Vim/7.4">
+<meta name="plugin-version" content="vim7.4_v2">
+<meta name="syntax" content="none">
+<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy=">
+<meta name="colorscheme" content="minimal">
+<style type="text/css">
+<!--
+pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; }
+body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color: #080808; }
+* { font-size: 12pt; font-size: 1em; }
+.muScenario { color: #00af00; }
+.muData { color: #ffff00; }
+.Delimiter { color: #800080; }
+.muRecipe { color: #ff8700; }
+.Special { color: #c00000; }
+.Constant { color: #00a0a0; }
+.SalientComment { color: #00ffff; }
+.CommentedCode { color: #6c6c6c; }
+.Comment { color: #9090ff; }
+.muControl { color: #c0a020; }
+-->
+</style>
+
+<script type='text/javascript'>
+<!--
+
+-->
+</script>
+</head>
+<body>
+<pre id='vimCodeElement'>
+<span class="SalientComment">## experimental compiler to translate programs written in a generic</span>
+<span class="SalientComment">## expression-oriented language called 'lambda' into mu</span>
+
+<span class="muScenario">scenario</span> convert-lambda [
+  run [
+    <span class="Constant">local-scope</span>
+    <span class="Constant">1</span>:address:array:character/<span class="Special">raw &lt;- </span>lambda-to-mu <span class="Constant">[(add a (multiply b c))]</span>
+    <span class="Constant">2</span>:array:character/<span class="Special">raw &lt;- </span>copy *<span class="Constant">1</span>:address:array:character/<span class="Special">raw</span>
+  ]
+  memory-should-contain [
+    <span class="Constant">2</span>:array:character<span class="Special"> &lt;- </span><span class="Constant">[t1 &lt;- multiply b c</span>
+<span class="Constant">result &lt;- add a t1]</span>
+  ]
+]
+
+<span class="muRecipe">def</span> lambda-to-mu in:address:array:character<span class="muRecipe"> -&gt; </span>out:address:array:character [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  out<span class="Special"> &lt;- </span>copy <span class="Constant">0</span>
+  cells:address:cell<span class="Special"> &lt;- </span>parse in
+  out<span class="Special"> &lt;- </span>to-mu cells
+]
+
+<span class="Comment"># 'parse' will turn lambda expressions into trees made of cells</span>
+<span class="muData">exclusive-container</span> cell [
+  atom:address:array:character
+  pair:pair
+]
+
+<span class="Comment"># printed below as &lt; first | rest &gt;</span>
+<span class="muData">container</span> pair [
+  first:address:cell
+  rest:address:cell
+]
+
+<span class="muRecipe">def</span> new-atom name:address:array:character<span class="muRecipe"> -&gt; </span>result:address:cell [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  result<span class="Special"> &lt;- </span>new <span class="Constant">cell:type</span>
+  *result<span class="Special"> &lt;- </span>merge <span class="Constant">0/tag:atom</span>, name
+]
+
+<span class="muRecipe">def</span> new-pair a:address:cell, b:address:cell<span class="muRecipe"> -&gt; </span>result:address:cell [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  result<span class="Special"> &lt;- </span>new <span class="Constant">cell:type</span>
+  *result<span class="Special"> &lt;- </span>merge <span class="Constant">1/tag:pair</span>, a/first, b/rest
+]
+
+<span class="muRecipe">def</span> is-atom? x:address:cell<span class="muRecipe"> -&gt; </span>result:boolean [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  <span class="muControl">reply-unless</span> x, <span class="Constant">0/false</span>
+  _, result<span class="Special"> &lt;- </span>maybe-convert *x, <span class="Constant">atom:variant</span>
+]
+
+<span class="muRecipe">def</span> is-pair? x:address:cell<span class="muRecipe"> -&gt; </span>result:boolean [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  <span class="muControl">reply-unless</span> x, <span class="Constant">0/false</span>
+  _, result<span class="Special"> &lt;- </span>maybe-convert *x, <span class="Constant">pair:variant</span>
+]
+
+<span class="muScenario">scenario</span> atom-is-not-pair [
+  <span class="Constant">local-scope</span>
+  s:address:array:character<span class="Special"> &lt;- </span>new <span class="Constant">[a]</span>
+  x:address:cell<span class="Special"> &lt;- </span>new-atom s
+  <span class="Constant">10</span>:boolean/<span class="Special">raw &lt;- </span>is-atom? x
+  <span class="Constant">11</span>:boolean/<span class="Special">raw &lt;- </span>is-pair? x
+  memory-should-contain [
+    <span class="Constant">10</span><span class="Special"> &lt;- </span><span class="Constant">1</span>
+    <span class="Constant">11</span><span class="Special"> &lt;- </span><span class="Constant">0</span>
+  ]
+]
+
+<span class="muScenario">scenario</span> pair-is-not-atom [
+  <span class="Constant">local-scope</span>
+  <span class="Comment"># construct (a . nil)</span>
+  s:address:array:character<span class="Special"> &lt;- </span>new <span class="Constant">[a]</span>
+  x:address:cell<span class="Special"> &lt;- </span>new-atom s
+  y:address:cell<span class="Special"> &lt;- </span>new-pair x, <span class="Constant">0/nil</span>
+  <span class="Constant">10</span>:boolean/<span class="Special">raw &lt;- </span>is-atom? y
+  <span class="Constant">11</span>:boolean/<span class="Special">raw &lt;- </span>is-pair? y
+  memory-should-contain [
+    <span class="Constant">10</span><span class="Special"> &lt;- </span><span class="Constant">0</span>
+    <span class="Constant">11</span><span class="Special"> &lt;- </span><span class="Constant">1</span>
+  ]
+]
+
+<span class="muRecipe">def</span> atom-match? x:address:cell, pat:address:array:character<span class="muRecipe"> -&gt; </span>result:boolean [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  s:address:array:character, is-atom?:boolean<span class="Special"> &lt;- </span>maybe-convert *x, <span class="Constant">atom:variant</span>
+  <span class="muControl">reply-unless</span> is-atom?, <span class="Constant">0/false</span>
+  result<span class="Special"> &lt;- </span>equal pat, s
+]
+
+<span class="muScenario">scenario</span> atom-match [
+  <span class="Constant">local-scope</span>
+  x:address:cell<span class="Special"> &lt;- </span>new-atom <span class="Constant">[abc]</span>
+  <span class="Constant">10</span>:boolean/<span class="Special">raw &lt;- </span>atom-match? x, <span class="Constant">[abc]</span>
+  memory-should-contain [
+    <span class="Constant">10</span><span class="Special"> &lt;- </span><span class="Constant">1</span>
+  ]
+]
+
+<span class="muRecipe">def</span> first x:address:cell<span class="muRecipe"> -&gt; </span>result:address:cell [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  pair:pair, pair?:boolean<span class="Special"> &lt;- </span>maybe-convert *x, <span class="Constant">pair:variant</span>
+  <span class="muControl">reply-unless</span> pair?, <span class="Constant">0/nil</span>
+  result<span class="Special"> &lt;- </span>get pair, <span class="Constant">first:offset</span>
+]
+
+<span class="muRecipe">def</span> rest x:address:cell<span class="muRecipe"> -&gt; </span>result:address:cell [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  pair:pair, pair?:boolean<span class="Special"> &lt;- </span>maybe-convert *x, <span class="Constant">pair:variant</span>
+  <span class="muControl">reply-unless</span> pair?, <span class="Constant">0/nil</span>
+  result<span class="Special"> &lt;- </span>get pair, <span class="Constant">rest:offset</span>
+]
+
+<span class="muRecipe">def</span> set-first base:address:cell, new-first:address:cell<span class="muRecipe"> -&gt; </span>base:address:cell [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  pair:pair, is-pair?:boolean<span class="Special"> &lt;- </span>maybe-convert *base, <span class="Constant">pair:variant</span>
+  <span class="muControl">reply-unless</span> is-pair?
+  pair<span class="Special"> &lt;- </span>put pair, <span class="Constant">first:offset</span>, new-first
+  *base<span class="Special"> &lt;- </span>merge <span class="Constant">1/pair</span>, pair
+]
+
+<span class="muRecipe">def</span> set-rest base:address:cell, new-rest:address:cell<span class="muRecipe"> -&gt; </span>base:address:cell [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  pair:pair, is-pair?:boolean<span class="Special"> &lt;- </span>maybe-convert *base, <span class="Constant">pair:variant</span>
+  <span class="muControl">reply-unless</span> is-pair?
+  pair<span class="Special"> &lt;- </span>put pair, <span class="Constant">rest:offset</span>, new-rest
+  *base<span class="Special"> &lt;- </span>merge <span class="Constant">1/pair</span>, pair
+]
+
+<span class="muScenario">scenario</span> cell-operations-on-atom [
+  <span class="Constant">local-scope</span>
+  s:address:array:character<span class="Special"> &lt;- </span>new <span class="Constant">[a]</span>
+  x:address:cell<span class="Special"> &lt;- </span>new-atom s
+  <span class="Constant">10</span>:address:cell/<span class="Special">raw &lt;- </span>first x
+  <span class="Constant">11</span>:address:cell/<span class="Special">raw &lt;- </span>rest x
+  memory-should-contain [
+    <span class="Constant">10</span><span class="Special"> &lt;- </span><span class="Constant">0</span>  <span class="Comment"># first is nil</span>
+    <span class="Constant">11</span><span class="Special"> &lt;- </span><span class="Constant">0</span>  <span class="Comment"># rest is nil</span>
+  ]
+]
+
+<span class="muScenario">scenario</span> cell-operations-on-pair [
+  <span class="Constant">local-scope</span>
+  <span class="Comment"># construct (a . nil)</span>
+  s:address:array:character<span class="Special"> &lt;- </span>new <span class="Constant">[a]</span>
+  x:address:cell<span class="Special"> &lt;- </span>new-atom s
+  y:address:cell<span class="Special"> &lt;- </span>new-pair x, <span class="Constant">0/nil</span>
+  x2:address:cell<span class="Special"> &lt;- </span>first y
+  <span class="Constant">10</span>:boolean/<span class="Special">raw &lt;- </span>equal x, x2
+  <span class="Constant">11</span>:address:cell/<span class="Special">raw &lt;- </span>rest y
+  memory-should-contain [
+    <span class="Constant">10</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># first is correct</span>
+    <span class="Constant">11</span><span class="Special"> &lt;- </span><span class="Constant">0</span>  <span class="Comment"># rest is nil</span>
+  ]
+]
+
+<span class="SalientComment">## convert lambda text to a tree of cells</span>
+
+<span class="muRecipe">def</span> parse in:address:array:character<span class="muRecipe"> -&gt; </span>out:address:cell [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  s:address:stream:character<span class="Special"> &lt;- </span>new-stream in
+  out, s<span class="Special"> &lt;- </span>parse s
+  trace <span class="Constant">2</span>, <span class="Constant">[app/parse]</span>, out
+]
+
+<span class="muRecipe">def</span> parse in:address:stream:character<span class="muRecipe"> -&gt; </span>out:address:cell, in:address:stream:character [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  <span class="Comment"># skip whitespace</span>
+  in<span class="Special"> &lt;- </span>skip-whitespace in
+  c:character, eof?:boolean<span class="Special"> &lt;- </span>peek in
+  <span class="muControl">reply-if</span> eof?, <span class="Constant">0/nil</span>
+  pair?:boolean<span class="Special"> &lt;- </span>equal c, <span class="Constant">40/open-paren</span>
+  <span class="Delimiter">{</span>
+    <span class="muControl">break-if</span> pair?
+    <span class="Comment"># atom</span>
+    b:address:buffer<span class="Special"> &lt;- </span>new-buffer <span class="Constant">30</span>
+    <span class="Delimiter">{</span>
+      done?:boolean<span class="Special"> &lt;- </span>end-of-stream? in
+      <span class="muControl">break-if</span> done?
+      <span class="Comment"># stop before close paren or space</span>
+      c:character<span class="Special"> &lt;- </span>peek in
+      done?<span class="Special"> &lt;- </span>equal c, <span class="Constant">41/close-paren</span>
+      <span class="muControl">break-if</span> done?
+      done?<span class="Special"> &lt;- </span>space? c
+      <span class="muControl">break-if</span> done?
+      c<span class="Special"> &lt;- </span>read in
+      b<span class="Special"> &lt;- </span>append b, c
+      <span class="muControl">loop</span>
+    <span class="Delimiter">}</span>
+    s:address:array:character<span class="Special"> &lt;- </span>buffer-to-array b
+    out<span class="Special"> &lt;- </span>new-atom s
+  <span class="Delimiter">}</span>
+  <span class="Delimiter">{</span>
+    <span class="muControl">break-unless</span> pair?
+    <span class="Comment"># pair</span>
+    read in  <span class="Comment"># skip the open-paren</span>
+    out<span class="Special"> &lt;- </span>new <span class="Constant">cell:type</span>  <span class="Comment"># start out with nil</span>
+    <span class="Comment"># read in first element of pair</span>
+    <span class="Delimiter">{</span>
+      end?:boolean<span class="Special"> &lt;- </span>end-of-stream? in
+      not-end?:boolean<span class="Special"> &lt;- </span>not end?
+      assert not-end?, <span class="Constant">[unbalanced '(' in expression]</span>
+      c<span class="Special"> &lt;- </span>peek in
+      close-paren?:boolean<span class="Special"> &lt;- </span>equal c, <span class="Constant">41/close-paren</span>
+      <span class="muControl">break-if</span> close-paren?
+      first:address:cell, in<span class="Special"> &lt;- </span>parse in
+      *out<span class="Special"> &lt;- </span>merge <span class="Constant">1/pair</span>, first, <span class="Constant">0/nil</span>
+    <span class="Delimiter">}</span>
+    <span class="Comment"># read in any remaining elements</span>
+    curr:address:cell<span class="Special"> &lt;- </span>copy out
+    <span class="Delimiter">{</span>
+      in<span class="Special"> &lt;- </span>skip-whitespace in
+      end?:boolean<span class="Special"> &lt;- </span>end-of-stream? in
+      not-end?:boolean<span class="Special"> &lt;- </span>not end?
+      assert not-end?, <span class="Constant">[unbalanced '(' in expression]</span>
+      <span class="Comment"># termination check: ')'</span>
+      c<span class="Special"> &lt;- </span>peek in
+      <span class="Delimiter">{</span>
+        close-paren?:boolean<span class="Special"> &lt;- </span>equal c, <span class="Constant">41/close-paren</span>
+        <span class="muControl">break-unless</span> close-paren?
+        read in  <span class="Comment"># skip ')'</span>
+        <span class="muControl">break</span> <span class="Constant">+end-pair:label</span>
+      <span class="Delimiter">}</span>
+      <span class="Comment"># still here? read next element of pair</span>
+      next:address:cell, in<span class="Special"> &lt;- </span>parse in
+      is-dot?:boolean<span class="Special"> &lt;- </span>atom-match? next, <span class="Constant">[.]</span>
+      <span class="Delimiter">{</span>
+        <span class="muControl">break-if</span> is-dot?
+        next-curr:address:cell<span class="Special"> &lt;- </span>new-pair next, <span class="Constant">0/nil</span>
+        curr<span class="Special"> &lt;- </span>set-rest curr, next-curr
+        curr<span class="Special"> &lt;- </span>rest curr
+      <span class="Delimiter">}</span>
+      <span class="Delimiter">{</span>
+        <span class="muControl">break-unless</span> is-dot?
+        <span class="Comment"># deal with dotted pair</span>
+        in<span class="Special"> &lt;- </span>skip-whitespace in
+        c<span class="Special"> &lt;- </span>peek in
+        not-close-paren?:boolean<span class="Special"> &lt;- </span>not-equal c, <span class="Constant">41/close-paren</span>
+        assert not-close-paren?, <span class="Constant">[')' cannot immediately follow '.']</span>
+        final:address:cell<span class="Special"> &lt;- </span>parse in
+        curr<span class="Special"> &lt;- </span>set-rest curr, final
+        <span class="Comment"># we're not gonna update curr, so better make sure the next iteration</span>
+        <span class="Comment"># is going to end the pair</span>
+        in<span class="Special"> &lt;- </span>skip-whitespace in
+        c<span class="Special"> &lt;- </span>peek in
+        close-paren?:boolean<span class="Special"> &lt;- </span>equal c, <span class="Constant">41/close-paren</span>
+        assert close-paren?, <span class="Constant">['.' must be followed by exactly one expression before ')']</span>
+      <span class="Delimiter">}</span>
+      <span class="muControl">loop</span>
+    <span class="Delimiter">}</span>
+<span class="Constant">    +end-pair</span>
+  <span class="Delimiter">}</span>
+]
+
+<span class="muRecipe">def</span> skip-whitespace in:address:stream:character<span class="muRecipe"> -&gt; </span>in:address:stream:character [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  <span class="Delimiter">{</span>
+    done?:boolean<span class="Special"> &lt;- </span>end-of-stream? in
+    <span class="muControl">reply-if</span> done?, <span class="Constant">0/null</span>
+    c:character<span class="Special"> &lt;- </span>peek in
+    space?:boolean<span class="Special"> &lt;- </span>space? c
+    <span class="muControl">break-unless</span> space?
+    read in  <span class="Comment"># skip</span>
+    <span class="muControl">loop</span>
+  <span class="Delimiter">}</span>
+]
+
+<span class="muRecipe">def</span> to-text x:address:cell<span class="muRecipe"> -&gt; </span>out:address:array:character [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  buf:address:buffer<span class="Special"> &lt;- </span>new-buffer <span class="Constant">30</span>
+  buf<span class="Special"> &lt;- </span>to-buffer x, buf
+  out<span class="Special"> &lt;- </span>buffer-to-array buf
+]
+
+<span class="muRecipe">def</span> to-buffer x:address:cell, buf:address:buffer<span class="muRecipe"> -&gt; </span>buf:address:buffer [
+  <span class="Constant">local-scope</span>
+  <span class="Constant">load-ingredients</span>
+  <span class="Comment"># base case: empty cell</span>
+  <span class="Delimiter">{</span>
+    <span class="muControl">break-if</span> x
+    buf<span class="Special"> &lt;- </span>append buf, <span class="Constant">[&lt;&gt;]</span>
+    <span class="muControl">reply</span>
+  <span class="Delimiter">}</span>
+  <span class="Comment"># base case: atom</span>
+  <span class="Delimiter">{</span>
+    s:address:array:character, atom?:boolean<span class="Special"> &lt;- </span>maybe-convert *x, <span class="Constant">atom:variant</span>
+    <span class="muControl">break-unless</span> atom?
+    buf<span class="Special"> &lt;- </span>append buf, s
+    <span class="muControl">reply</span>
+  <span class="Delimiter">}</span>
+  <span class="Comment"># recursive case: pair</span>
+  buf<span class="Special"> &lt;- </span>append buf, <span class="Constant">[&lt; ]</span>
+  first:address:cell<span class="Special"> &lt;- </span>first x
+  buf<span class="Special"> &lt;- </span>to-buffer first, buf
+  buf<span class="Special"> &lt;- </span>append buf, <span class="Constant">[ | ]</span>
+  rest:address:cell<span class="Special"> &lt;- </span>rest x
+  buf<span class="Special"> &lt;- </span>to-buffer rest, buf
+  buf<span class="Special"> &lt;- </span>append buf, <span class="Constant">[ &gt;]</span>
+]
+
+<span class="muScenario">scenario</span> parse-single-letter-atom [
+  <span class="Constant">local-scope</span>
+  s:address:array:character<span class="Special"> &lt;- </span>new <span class="Constant">[a]</span>
+  x:address:cell<span class="Special"> &lt;- </span>parse s
+  s2:address:array:character, <span class="Constant">10</span>:boolean/<span class="Special">raw &lt;- </span>maybe-convert *x, <span class="Constant">atom:variant</span>
+  <span class="Constant">11</span>:array:character/<span class="Special">raw &lt;- </span>copy *s2
+  memory-should-contain [
+    <span class="Constant">10</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># parse result is an atom</span>
+    <span class="Constant">11</span>:array:character<span class="Special"> &lt;- </span><span class="Constant">[a]</span>
+  ]
+]
+
+<span class="muScenario">scenario</span> parse-atom [
+  <span class="Constant">local-scope</span>
+  s:address:array:character<span class="Special"> &lt;- </span>new <span class="Constant">[abc]</span>
+  x:address:cell<span class="Special"> &lt;- </span>parse s
+  s2:address:array:character, <span class="Constant">10</span>:boolean/<span class="Special">raw &lt;- </span>maybe-convert *x, <span class="Constant">atom:variant</span>
+  <span class="Constant">11</span>:array:character/<span class="Special">raw &lt;- </span>copy *s2
+  memory-should-contain [
+    <span class="Constant">10</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># parse result is an atom</span>
+    <span class="Constant">11</span>:array:character<span class="Special"> &lt;- </span><span class="Constant">[abc]</span>
+  ]
+]
+
+<span class="muScenario">scenario</span> parse-list-of-two-atoms [
+  <span class="Constant">local-scope</span>
+  s:address:array:character<span class="Special"> &lt;- </span>new <span class="Constant">[(abc def)]</span>
+  x:address:cell<span class="Special"> &lt;- </span>parse s
+  trace-should-contain [
+    app/parse: &lt; abc | &lt; <span class="muRecipe">def</span> | <span class="Constant">&lt;&gt;</span> &gt; &gt;
+  ]
+  <span class="Constant">10</span>:boolean/<span class="Special">raw &lt;- </span>is-pair? x
+  x1:address:cell<span class="Special"> &lt;- </span>first x
+  x2:address:cell<span class="Special"> &lt;- </span>rest x
+  s1:address:array:character, <span class="Constant">11</span>:boolean/<span class="Special">raw &lt;- </span>maybe-convert *x1, <span class="Constant">atom:variant</span>
+  <span class="Constant">12</span>:boolean/<span class="Special">raw &lt;- </span>is-pair? x2
+  x3:address:cell<span class="Special"> &lt;- </span>first x2
+  s2:address:array:character, <span class="Constant">13</span>:boolean/<span class="Special">raw &lt;- </span>maybe-convert *x3, <span class="Constant">atom:variant</span>
+  <span class="Constant">14</span>:address:cell/<span class="Special">raw &lt;- </span>rest x2
+  <span class="Constant">20</span>:array:character/<span class="Special">raw &lt;- </span>copy *s1
+  <span class="Constant">30</span>:array:character/<span class="Special">raw &lt;- </span>copy *s2
+  memory-should-contain [
+    <span class="Constant">10</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># parse result is a pair</span>
+    <span class="Constant">11</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.first is an atom</span>
+    <span class="Constant">12</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.rest is a pair</span>
+    <span class="Constant">13</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.rest.first is an atom</span>
+    <span class="Constant">14</span><span class="Special"> &lt;- </span><span class="Constant">0</span>  <span class="Comment"># result.rest.rest is nil</span>
+    <span class="Constant">20</span>:array:character<span class="Special"> &lt;- </span><span class="Constant">[abc]</span>  <span class="Comment"># result.first</span>
+    <span class="Constant">30</span>:array:character<span class="Special"> &lt;- </span><span class="Constant">[def]</span>  <span class="Comment"># result.rest.first</span>
+  ]
+]
+
+<span class="muScenario">scenario</span> parse-list-with-extra-spaces [
+  <span class="Constant">local-scope</span>
+  s:address:array:character<span class="Special"> &lt;- </span>new <span class="Constant">[ ( abc  def ) ]</span>  <span class="Comment"># extra spaces</span>
+  x:address:cell<span class="Special"> &lt;- </span>parse s
+  trace-should-contain [
+    app/parse: &lt; abc | &lt; <span class="muRecipe">def</span> | <span class="Constant">&lt;&gt;</span> &gt; &gt;
+  ]
+  <span class="Constant">10</span>:boolean/<span class="Special">raw &lt;- </span>is-pair? x
+  x1:address:cell<span class="Special"> &lt;- </span>first x
+  x2:address:cell<span class="Special"> &lt;- </span>rest x
+  s1:address:array:character, <span class="Constant">11</span>:boolean/<span class="Special">raw &lt;- </span>maybe-convert *x1, <span class="Constant">atom:variant</span>
+  <span class="Constant">12</span>:boolean/<span class="Special">raw &lt;- </span>is-pair? x2
+  x3:address:cell<span class="Special"> &lt;- </span>first x2
+  s2:address:array:character, <span class="Constant">13</span>:boolean/<span class="Special">raw &lt;- </span>maybe-convert *x3, <span class="Constant">atom:variant</span>
+  <span class="Constant">14</span>:address:cell/<span class="Special">raw &lt;- </span>rest x2
+  <span class="Constant">20</span>:array:character/<span class="Special">raw &lt;- </span>copy *s1
+  <span class="Constant">30</span>:array:character/<span class="Special">raw &lt;- </span>copy *s2
+  memory-should-contain [
+    <span class="Constant">10</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># parse result is a pair</span>
+    <span class="Constant">11</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.first is an atom</span>
+    <span class="Constant">12</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.rest is a pair</span>
+    <span class="Constant">13</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.rest.first is an atom</span>
+    <span class="Constant">14</span><span class="Special"> &lt;- </span><span class="Constant">0</span>  <span class="Comment"># result.rest.rest is nil</span>
+    <span class="Constant">20</span>:array:character<span class="Special"> &lt;- </span><span class="Constant">[abc]</span>  <span class="Comment"># result.first</span>
+    <span class="Constant">30</span>:array:character<span class="Special"> &lt;- </span><span class="Constant">[def]</span>  <span class="Comment"># result.rest.first</span>
+  ]
+]
+
+<span class="muScenario">scenario</span> parse-list-of-more-than-two-atoms [
+  <span class="Constant">local-scope</span>
+  s:address:array:character<span class="Special"> &lt;- </span>new <span class="Constant">[(abc def ghi)]</span>
+  x:address:cell<span class="Special"> &lt;- </span>parse s
+  trace-should-contain [
+    app/parse: &lt; abc | &lt; <span class="muRecipe">def</span> | &lt; ghi | <span class="Constant">&lt;&gt;</span> &gt; &gt; &gt;
+  ]
+  <span class="Constant">10</span>:boolean/<span class="Special">raw &lt;- </span>is-pair? x
+  x1:address:cell<span class="Special"> &lt;- </span>first x
+  x2:address:cell<span class="Special"> &lt;- </span>rest x
+  s1:address:array:character, <span class="Constant">11</span>:boolean/<span class="Special">raw &lt;- </span>maybe-convert *x1, <span class="Constant">atom:variant</span>
+  <span class="Constant">12</span>:boolean/<span class="Special">raw &lt;- </span>is-pair? x2
+  x3:address:cell<span class="Special"> &lt;- </span>first x2
+  s2:address:array:character, <span class="Constant">13</span>:boolean/<span class="Special">raw &lt;- </span>maybe-convert *x3, <span class="Constant">atom:variant</span>
+  x4:address:cell<span class="Special"> &lt;- </span>rest x2
+  <span class="Constant">14</span>:boolean/<span class="Special">raw &lt;- </span>is-pair? x4
+  x5:address:cell<span class="Special"> &lt;- </span>first x4
+  s3:address:array:character, <span class="Constant">15</span>:boolean/<span class="Special">raw &lt;- </span>maybe-convert *x5, <span class="Constant">atom:variant</span>
+  <span class="Constant">16</span>:address:cell/<span class="Special">raw &lt;- </span>rest x4
+  <span class="Constant">20</span>:array:character/<span class="Special">raw &lt;- </span>copy *s1
+  <span class="Constant">30</span>:array:character/<span class="Special">raw &lt;- </span>copy *s2
+  <span class="Constant">40</span>:array:character/<span class="Special">raw &lt;- </span>copy *s3
+  memory-should-contain [
+    <span class="Constant">10</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># parse result is a pair</span>
+    <span class="Constant">11</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.first is an atom</span>
+    <span class="Constant">12</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.rest is a pair</span>
+    <span class="Constant">13</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.rest.first is an atom</span>
+    <span class="Constant">14</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.rest.rest is a pair</span>
+    <span class="Constant">15</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.rest.rest.first is an atom</span>
+    <span class="Constant">16</span><span class="Special"> &lt;- </span><span class="Constant">0</span>  <span class="Comment"># result.rest.rest.rest is nil</span>
+    <span class="Constant">20</span>:array:character<span class="Special"> &lt;- </span><span class="Constant">[abc]</span>  <span class="Comment"># result.first</span>
+    <span class="Constant">30</span>:array:character<span class="Special"> &lt;- </span><span class="Constant">[def]</span>  <span class="Comment"># result.rest.first</span>
+    <span class="Constant">40</span>:array:character<span class="Special"> &lt;- </span><span class="Constant">[ghi]</span>  <span class="Comment"># result.rest.rest</span>
+  ]
+]
+
+<span class="muScenario">scenario</span> parse-nested-list [
+  <span class="Constant">local-scope</span>
+  s:address:array:character<span class="Special"> &lt;- </span>new <span class="Constant">[((abc))]</span>
+  x:address:cell<span class="Special"> &lt;- </span>parse s
+  trace-should-contain [
+    app/parse: &lt; &lt; abc | <span class="Constant">&lt;&gt;</span> &gt; | <span class="Constant">&lt;&gt;</span> &gt;
+  ]
+  <span class="Constant">10</span>:boolean/<span class="Special">raw &lt;- </span>is-pair? x
+  x1:address:cell<span class="Special"> &lt;- </span>first x
+  <span class="Constant">11</span>:boolean/<span class="Special">raw &lt;- </span>is-pair? x
+  x2:address:cell<span class="Special"> &lt;- </span>first x1
+  s1:address:array:character, <span class="Constant">12</span>:boolean/<span class="Special">raw &lt;- </span>maybe-convert *x2, <span class="Constant">atom:variant</span>
+  <span class="Constant">13</span>:address:cell/<span class="Special">raw &lt;- </span>rest x1
+  <span class="Constant">14</span>:address:cell/<span class="Special">raw &lt;- </span>rest x
+  <span class="Constant">20</span>:array:character/<span class="Special">raw &lt;- </span>copy *s1
+  memory-should-contain [
+    <span class="Constant">10</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># parse result is a pair</span>
+    <span class="Constant">11</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.first is a pair</span>
+    <span class="Constant">12</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.first.first is an atom</span>
+    <span class="Constant">13</span><span class="Special"> &lt;- </span><span class="Constant">0</span>  <span class="Comment"># result.first.rest is nil</span>
+    <span class="Constant">14</span><span class="Special"> &lt;- </span><span class="Constant">0</span>  <span class="Comment"># result.rest is nil</span>
+    <span class="Constant">20</span>:array:character<span class="Special"> &lt;- </span><span class="Constant">[abc]</span>  <span class="Comment"># result.first.first</span>
+  ]
+]
+
+<span class="muScenario">scenario</span> parse-nested-list-2 [
+  <span class="Constant">local-scope</span>
+  s:address:array:character<span class="Special"> &lt;- </span>new <span class="Constant">[((abc) def)]</span>
+  x:address:cell<span class="Special"> &lt;- </span>parse s
+  trace-should-contain [
+    app/parse: &lt; &lt; abc | <span class="Constant">&lt;&gt;</span> &gt; | &lt; <span class="muRecipe">def</span> | <span class="Constant">&lt;&gt;</span> &gt; &gt;
+  ]
+  <span class="Constant">10</span>:boolean/<span class="Special">raw &lt;- </span>is-pair? x
+  x1:address:cell<span class="Special"> &lt;- </span>first x
+  <span class="Constant">11</span>:boolean/<span class="Special">raw &lt;- </span>is-pair? x
+  x2:address:cell<span class="Special"> &lt;- </span>first x1
+  s1:address:array:character, <span class="Constant">12</span>:boolean/<span class="Special">raw &lt;- </span>maybe-convert *x2, <span class="Constant">atom:variant</span>
+  <span class="Constant">13</span>:address:cell/<span class="Special">raw &lt;- </span>rest x1
+  x3:address:cell<span class="Special"> &lt;- </span>rest x
+  x4:address:cell<span class="Special"> &lt;- </span>first x3
+  s2:address:array:character, <span class="Constant">14</span>:boolean/<span class="Special">raw &lt;- </span>maybe-convert *x4, <span class="Constant">atom:variant</span>
+  <span class="Constant">15</span>:address:cell/<span class="Special">raw &lt;- </span>rest x3
+  <span class="Constant">20</span>:array:character/<span class="Special">raw &lt;- </span>copy *s1
+  <span class="Constant">30</span>:array:character/<span class="Special">raw &lt;- </span>copy *s2
+  memory-should-contain [
+    <span class="Constant">10</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># parse result is a pair</span>
+    <span class="Constant">11</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.first is a pair</span>
+    <span class="Constant">12</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.first.first is an atom</span>
+    <span class="Constant">13</span><span class="Special"> &lt;- </span><span class="Constant">0</span>  <span class="Comment"># result.first.rest is nil</span>
+    <span class="Constant">14</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.rest.first is an atom</span>
+    <span class="Constant">15</span><span class="Special"> &lt;- </span><span class="Constant">0</span>  <span class="Comment"># result.rest.rest is nil</span>
+    <span class="Constant">20</span>:array:character<span class="Special"> &lt;- </span><span class="Constant">[abc]</span>  <span class="Comment"># result.first.first</span>
+    <span class="Constant">30</span>:array:character<span class="Special"> &lt;- </span><span class="Constant">[def]</span>  <span class="Comment"># result.rest.first</span>
+  ]
+]
+
+<span class="Comment"># todo: uncomment these tests after we figure out how to continue tests after</span>
+<span class="Comment"># assertion failures</span>
+<span class="CommentedCode">#? scenario parse-error [</span>
+<span class="CommentedCode">#?   local-scope</span>
+<span class="CommentedCode">#?   s:address:array:character &lt;- new [(]</span>
+<span class="CommentedCode">#? #?   hide-errors</span>
+<span class="CommentedCode">#?   x:address:cell &lt;- parse s</span>
+<span class="CommentedCode">#? #?   show-errors</span>
+<span class="CommentedCode">#?   trace-should-contain [</span>
+<span class="CommentedCode">#?     error: unbalanced '(' in expression</span>
+<span class="CommentedCode">#?   ]</span>
+<span class="CommentedCode">#? ]</span>
+<span class="CommentedCode">#? </span>
+<span class="CommentedCode">#? scenario parse-error-after-element [</span>
+<span class="CommentedCode">#?   local-scope</span>
+<span class="CommentedCode">#?   s:address:array:character &lt;- new [(abc]</span>
+<span class="CommentedCode">#? #?   hide-errors</span>
+<span class="CommentedCode">#?   x:address:cell &lt;- parse s</span>
+<span class="CommentedCode">#? #?   show-errors</span>
+<span class="CommentedCode">#?   trace-should-contain [</span>
+<span class="CommentedCode">#?     error: unbalanced '(' in expression</span>
+<span class="CommentedCode">#?   ]</span>
+<span class="CommentedCode">#? ]</span>
+
+<span class="muScenario">scenario</span> parse-dotted-list-of-two-atoms [
+  <span class="Constant">local-scope</span>
+  s:address:array:character<span class="Special"> &lt;- </span>new <span class="Constant">[(abc . def)]</span>
+  x:address:cell<span class="Special"> &lt;- </span>parse s
+  trace-should-contain [
+    app/parse: &lt; abc | <span class="muRecipe">def</span> &gt;
+  ]
+  <span class="Constant">10</span>:boolean/<span class="Special">raw &lt;- </span>is-pair? x
+  x1:address:cell<span class="Special"> &lt;- </span>first x
+  x2:address:cell<span class="Special"> &lt;- </span>rest x
+  s1:address:array:character, <span class="Constant">11</span>:boolean/<span class="Special">raw &lt;- </span>maybe-convert *x1, <span class="Constant">atom:variant</span>
+  s2:address:array:character, <span class="Constant">12</span>:boolean/<span class="Special">raw &lt;- </span>maybe-convert *x2, <span class="Constant">atom:variant</span>
+  <span class="Constant">20</span>:array:character/<span class="Special">raw &lt;- </span>copy *s1
+  <span class="Constant">30</span>:array:character/<span class="Special">raw &lt;- </span>copy *s2
+  memory-should-contain [
+    <span class="Comment"># parses to &lt; abc | def &gt;</span>
+    <span class="Constant">10</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># parse result is a pair</span>
+    <span class="Constant">11</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.first is an atom</span>
+    <span class="Constant">12</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.rest is an atom</span>
+    <span class="Constant">20</span>:array:character<span class="Special"> &lt;- </span><span class="Constant">[abc]</span>  <span class="Comment"># result.first</span>
+    <span class="Constant">30</span>:array:character<span class="Special"> &lt;- </span><span class="Constant">[def]</span>  <span class="Comment"># result.rest</span>
+  ]
+]
+
+<span class="muScenario">scenario</span> parse-dotted-list-of-more-than-two-atoms [
+  <span class="Constant">local-scope</span>
+  s:address:array:character<span class="Special"> &lt;- </span>new <span class="Constant">[(abc def . ghi)]</span>
+  x:address:cell<span class="Special"> &lt;- </span>parse s
+  trace-should-contain [
+    app/parse: &lt; abc | &lt; <span class="muRecipe">def</span> | ghi &gt; &gt;
+  ]
+  <span class="Constant">10</span>:boolean/<span class="Special">raw &lt;- </span>is-pair? x
+  x1:address:cell<span class="Special"> &lt;- </span>first x
+  x2:address:cell<span class="Special"> &lt;- </span>rest x
+  s1:address:array:character, <span class="Constant">11</span>:boolean/<span class="Special">raw &lt;- </span>maybe-convert *x1, <span class="Constant">atom:variant</span>
+  <span class="Constant">12</span>:boolean/<span class="Special">raw &lt;- </span>is-pair? x2
+  x3:address:cell<span class="Special"> &lt;- </span>first x2
+  s2:address:array:character, <span class="Constant">13</span>:boolean/<span class="Special">raw &lt;- </span>maybe-convert *x3, <span class="Constant">atom:variant</span>
+  x4:address:cell<span class="Special"> &lt;- </span>rest x2
+  s3:address:array:character, <span class="Constant">14</span>:boolean/<span class="Special">raw &lt;- </span>maybe-convert *x4, <span class="Constant">atom:variant</span>
+  <span class="Constant">20</span>:array:character/<span class="Special">raw &lt;- </span>copy *s1
+  <span class="Constant">30</span>:array:character/<span class="Special">raw &lt;- </span>copy *s2
+  <span class="Constant">40</span>:array:character/<span class="Special">raw &lt;- </span>copy *s3
+  memory-should-contain [
+    <span class="Constant">10</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># parse result is a pair</span>
+    <span class="Constant">11</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.first is an atom</span>
+    <span class="Constant">12</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.rest is a pair</span>
+    <span class="Constant">13</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.rest.first is an atom</span>
+    <span class="Constant">14</span><span class="Special"> &lt;- </span><span class="Constant">1</span>  <span class="Comment"># result.rest.rest is an atom</span>
+    <span class="Constant">20</span>:array:character<span class="Special"> &lt;- </span><span class="Constant">[abc]</span>  <span class="Comment"># result.first</span>
+    <span class="Constant">30</span>:array:character<span class="Special"> &lt;- </span><span class="Constant">[def]</span>  <span class="Comment"># result.rest.first</span>
+    <span class="Constant">40</span>:array:character<span class="Special"> &lt;- </span><span class="Constant">[ghi]</span>  <span class="Comment"># result.rest.rest</span>
+  ]
+]
+</pre>
+</body>
+</html>
+<!-- vim: set foldmethod=manual : -->
diff --git a/index.html b/index.html
index c11846c1..0581d554 100644
--- a/index.html
+++ b/index.html
@@ -115,10 +115,10 @@ akin to C unions but with a tag so each value knows its &lsquo;kind&rsquo;.
 Out of these primitive types, Mu builds the usual and growing menagerie of
 data structures: <a href='html/064list.mu.html'>linked lists</a> permitting
 fast insertion and deletion and unidirectional scanning but slow search;
-<a href='html/066duplex_list.mu.html'><em>duplex lists</em></a> that permit
-bidirectional scanning; <a href='html/069table.mu.html'>associative arrays or <em>tables</em></a>
-for fast insertion, deletion and search using <a href='html/068hash.cc.html'>hash</a>
-tables; and <a href='html/067stream.mu.html'><em>streams</em></a> for
+<a href='html/065duplex_list.mu.html'><em>duplex lists</em></a> that permit
+bidirectional scanning; <a href='html/070table.mu.html'>associative arrays or <em>tables</em></a>
+for fast insertion, deletion and search using <a href='html/069hash.cc.html'>hash</a>
+functions; and <a href='html/066stream.mu.html'><em>streams</em></a> for
 gradually constructing long strings in a piecemeal fashion.
 
 <p/>Dynamic memory management: Mu supports <a href='html/034address.cc.html'>allocating</a>
@@ -137,16 +137,16 @@ additional runtime cost in exchange for C-like flexibility (you can copy
 addresses around all you like, and write from any copy of an address) and
 simpler implementation (no static analysis).
 
-<p/>Support for higher-order recipes that can pass <a href='html/070recipe.cc.html'>recipes</a>
+<p/>Support for higher-order recipes that can pass <a href='html/071recipe.cc.html'>recipes</a>
 around like any other value.
 
-<p/>Support for running multiple functions concurrently using <a href='html/071scheduler.cc.html'></a><em>routines</em></a>,
-for communicating between routines using <a href='html/074channel.mu.html'><em>channels</em></a>,
-and for <a href='html/072wait.cc.html'>synchronizing</a> between routines.
+<p/>Support for running multiple functions concurrently using <a href='html/072scheduler.cc.html'></a><em>routines</em></a>,
+for communicating between routines using <a href='html/075channel.mu.html'><em>channels</em></a>,
+and for <a href='html/073wait.cc.html'>synchronizing</a> between routines.
 Channels are Mu's only synchronization primitive, queues that can cause the
 routine reading or writing from them to stall without taking up CPU resources.
 Mu provides safe concurrency by forbidding routines from sharing addresses;
-writing to a channel always performs a <a href='html/073deep_copy.cc.html'>deep copy</a>
+writing to a channel always performs a <a href='html/074deep_copy.cc.html'>deep copy</a>
 that preserves all internal aliasing.
 
 <p><b>Part III</b>: transforms to make Mu a little more expressive, and give
@@ -208,7 +208,8 @@ the <span style='font-family:courier,fixed'>stash</span> command. By default
 locations in memory, one by one. To extend its display format specific types,
 define a function called <span style='font-family:courier,fixed'>to-text</span>
 with the appropriate ingredient type, returning a Mu string.
-<br/><a href='html/065random.cc.html'>065random.cc</a>: a random-number
+<br/><a href='html/067random.cc.html'>067random.cc</a>: a random-number
+generator with a <a href='html/068random.mu.html'>testable</a> interface.
 <br/><a href='html/072channel.mu.html'>072channel.mu</a>: channels are Mu's
 only synchronization primitive, queues that can cause the routine reading or
 writing from them to stall without taking up CPU resources.