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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
45 files changed, 1151 insertions, 309 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 : -->