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authorKartik K. Agaram <vc@akkartik.com>2017-06-24 16:00:44 -0700
committerKartik K. Agaram <vc@akkartik.com>2017-06-24 16:00:44 -0700
commitaac2775a4d30459c3090569b26e81ba18f1423a7 (patch)
tree4dfec62ec660fa9a0297cfc813b133286d3ece2e /html/edit/012-editor-undo.mu.html
parentd467b0a5b2ebf4e3bbfb510ca317e6141cce0d06 (diff)
downloadmu-aac2775a4d30459c3090569b26e81ba18f1423a7.tar.gz
3951
Diffstat (limited to 'html/edit/012-editor-undo.mu.html')
-rw-r--r--html/edit/012-editor-undo.mu.html260
1 files changed, 130 insertions, 130 deletions
diff --git a/html/edit/012-editor-undo.mu.html b/html/edit/012-editor-undo.mu.html
index 24025564..1f2ab3de 100644
--- a/html/edit/012-editor-undo.mu.html
+++ b/html/edit/012-editor-undo.mu.html
@@ -168,17 +168,17 @@ if ('onhashchange' in window) {
 <span id="L105" class="LineNr"> 105 </span>  <span class="Comment"># create an editor and type a character</span>
 <span id="L106" class="LineNr"> 106 </span>  assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span>
 <span id="L107" class="LineNr"> 107 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> <span class="Constant">[]</span>, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L108" class="LineNr"> 108 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L108" class="LineNr"> 108 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L109" class="LineNr"> 109 </span>  assume-console [
 <span id="L110" class="LineNr"> 110 </span>  <span class="Conceal">¦</span> type <span class="Constant">[0]</span>
 <span id="L111" class="LineNr"> 111 </span>  ]
-<span id="L112" class="LineNr"> 112 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L112" class="LineNr"> 112 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L113" class="LineNr"> 113 </span>  <span class="Comment"># undo</span>
 <span id="L114" class="LineNr"> 114 </span>  assume-console [
 <span id="L115" class="LineNr"> 115 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L116" class="LineNr"> 116 </span>  ]
 <span id="L117" class="LineNr"> 117 </span>  run [
-<span id="L118" class="LineNr"> 118 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L118" class="LineNr"> 118 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L119" class="LineNr"> 119 </span>  ]
 <span id="L120" class="LineNr"> 120 </span>  <span class="Comment"># character should be gone</span>
 <span id="L121" class="LineNr"> 121 </span>  screen-should-contain [
@@ -192,7 +192,7 @@ if ('onhashchange' in window) {
 <span id="L129" class="LineNr"> 129 </span>  <span class="Conceal">¦</span> type <span class="Constant">[1]</span>
 <span id="L130" class="LineNr"> 130 </span>  ]
 <span id="L131" class="LineNr"> 131 </span>  run [
-<span id="L132" class="LineNr"> 132 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L132" class="LineNr"> 132 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L133" class="LineNr"> 133 </span>  ]
 <span id="L134" class="LineNr"> 134 </span>  screen-should-contain [
 <span id="L135" class="LineNr"> 135 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
@@ -297,17 +297,17 @@ if ('onhashchange' in window) {
 <span id="L234" class="LineNr"> 234 </span>  <span class="Comment"># create an editor and type multiple characters</span>
 <span id="L235" class="LineNr"> 235 </span>  assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span>
 <span id="L236" class="LineNr"> 236 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> <span class="Constant">[]</span>, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L237" class="LineNr"> 237 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L237" class="LineNr"> 237 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L238" class="LineNr"> 238 </span>  assume-console [
 <span id="L239" class="LineNr"> 239 </span>  <span class="Conceal">¦</span> type <span class="Constant">[012]</span>
 <span id="L240" class="LineNr"> 240 </span>  ]
-<span id="L241" class="LineNr"> 241 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L241" class="LineNr"> 241 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L242" class="LineNr"> 242 </span>  <span class="Comment"># undo</span>
 <span id="L243" class="LineNr"> 243 </span>  assume-console [
 <span id="L244" class="LineNr"> 244 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L245" class="LineNr"> 245 </span>  ]
 <span id="L246" class="LineNr"> 246 </span>  run [
-<span id="L247" class="LineNr"> 247 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L247" class="LineNr"> 247 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L248" class="LineNr"> 248 </span>  ]
 <span id="L249" class="LineNr"> 249 </span>  <span class="Comment"># all characters must be gone</span>
 <span id="L250" class="LineNr"> 250 </span>  screen-should-contain [
@@ -323,12 +323,12 @@ if ('onhashchange' in window) {
 <span id="L260" class="LineNr"> 260 </span>  <span class="Comment"># create an editor with some text</span>
 <span id="L261" class="LineNr"> 261 </span>  assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span>
 <span id="L262" class="LineNr"> 262 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> <span class="Constant">[a]</span>, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L263" class="LineNr"> 263 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L263" class="LineNr"> 263 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L264" class="LineNr"> 264 </span>  <span class="Comment"># type some characters</span>
 <span id="L265" class="LineNr"> 265 </span>  assume-console [
 <span id="L266" class="LineNr"> 266 </span>  <span class="Conceal">¦</span> type <span class="Constant">[012]</span>
 <span id="L267" class="LineNr"> 267 </span>  ]
-<span id="L268" class="LineNr"> 268 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L268" class="LineNr"> 268 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L269" class="LineNr"> 269 </span>  screen-should-contain [
 <span id="L270" class="LineNr"> 270 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
 <span id="L271" class="LineNr"> 271 </span>  <span class="Conceal">¦</span><span class="Constant"> .012a      .</span>
@@ -340,7 +340,7 @@ if ('onhashchange' in window) {
 <span id="L277" class="LineNr"> 277 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L278" class="LineNr"> 278 </span>  ]
 <span id="L279" class="LineNr"> 279 </span>  run [
-<span id="L280" class="LineNr"> 280 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L280" class="LineNr"> 280 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L281" class="LineNr"> 281 </span>  ]
 <span id="L282" class="LineNr"> 282 </span>  <span class="Comment"># back to original text</span>
 <span id="L283" class="LineNr"> 283 </span>  screen-should-contain [
@@ -354,7 +354,7 @@ if ('onhashchange' in window) {
 <span id="L291" class="LineNr"> 291 </span>  <span class="Conceal">¦</span> type <span class="Constant">[3]</span>
 <span id="L292" class="LineNr"> 292 </span>  ]
 <span id="L293" class="LineNr"> 293 </span>  run [
-<span id="L294" class="LineNr"> 294 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L294" class="LineNr"> 294 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L295" class="LineNr"> 295 </span>  ]
 <span id="L296" class="LineNr"> 296 </span>  screen-should-contain [
 <span id="L297" class="LineNr"> 297 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
@@ -369,13 +369,13 @@ if ('onhashchange' in window) {
 <span id="L306" class="LineNr"> 306 </span>  <span class="Comment"># create an editor with some text</span>
 <span id="L307" class="LineNr"> 307 </span>  assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span>
 <span id="L308" class="LineNr"> 308 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> <span class="Constant">[  abc]</span>, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L309" class="LineNr"> 309 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L309" class="LineNr"> 309 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L310" class="LineNr"> 310 </span>  <span class="Comment"># new line</span>
 <span id="L311" class="LineNr"> 311 </span>  assume-console [
 <span id="L312" class="LineNr"> 312 </span>  <span class="Conceal">¦</span> left-click<span class="Constant"> 1</span>,<span class="Constant"> 8</span>
 <span id="L313" class="LineNr"> 313 </span>  <span class="Conceal">¦</span> press enter
 <span id="L314" class="LineNr"> 314 </span>  ]
-<span id="L315" class="LineNr"> 315 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L315" class="LineNr"> 315 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L316" class="LineNr"> 316 </span>  screen-should-contain [
 <span id="L317" class="LineNr"> 317 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
 <span id="L318" class="LineNr"> 318 </span>  <span class="Conceal">¦</span><span class="Constant"> .  abc     .</span>
@@ -395,7 +395,7 @@ if ('onhashchange' in window) {
 <span id="L332" class="LineNr"> 332 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L333" class="LineNr"> 333 </span>  ]
 <span id="L334" class="LineNr"> 334 </span>  run [
-<span id="L335" class="LineNr"> 335 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L335" class="LineNr"> 335 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L336" class="LineNr"> 336 </span>  ]
 <span id="L337" class="LineNr"> 337 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
 <span id="L338" class="LineNr"> 338 </span>  4:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-column:offset</span>
@@ -415,7 +415,7 @@ if ('onhashchange' in window) {
 <span id="L352" class="LineNr"> 352 </span>  <span class="Conceal">¦</span> type <span class="Constant">[1]</span>
 <span id="L353" class="LineNr"> 353 </span>  ]
 <span id="L354" class="LineNr"> 354 </span>  run [
-<span id="L355" class="LineNr"> 355 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L355" class="LineNr"> 355 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L356" class="LineNr"> 356 </span>  ]
 <span id="L357" class="LineNr"> 357 </span>  screen-should-contain [
 <span id="L358" class="LineNr"> 358 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
@@ -432,12 +432,12 @@ if ('onhashchange' in window) {
 <span id="L369" class="LineNr"> 369 </span>  <span class="Comment"># create an editor, type something, undo</span>
 <span id="L370" class="LineNr"> 370 </span>  assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span>
 <span id="L371" class="LineNr"> 371 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> <span class="Constant">[a]</span>, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L372" class="LineNr"> 372 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L372" class="LineNr"> 372 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L373" class="LineNr"> 373 </span>  assume-console [
 <span id="L374" class="LineNr"> 374 </span>  <span class="Conceal">¦</span> type <span class="Constant">[012]</span>
 <span id="L375" class="LineNr"> 375 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L376" class="LineNr"> 376 </span>  ]
-<span id="L377" class="LineNr"> 377 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L377" class="LineNr"> 377 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L378" class="LineNr"> 378 </span>  screen-should-contain [
 <span id="L379" class="LineNr"> 379 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
 <span id="L380" class="LineNr"> 380 </span>  <span class="Conceal">¦</span><span class="Constant"> .a         .</span>
@@ -449,7 +449,7 @@ if ('onhashchange' in window) {
 <span id="L386" class="LineNr"> 386 </span>  <span class="Conceal">¦</span> press ctrl-y
 <span id="L387" class="LineNr"> 387 </span>  ]
 <span id="L388" class="LineNr"> 388 </span>  run [
-<span id="L389" class="LineNr"> 389 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L389" class="LineNr"> 389 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L390" class="LineNr"> 390 </span>  ]
 <span id="L391" class="LineNr"> 391 </span>  <span class="Comment"># all characters must be back</span>
 <span id="L392" class="LineNr"> 392 </span>  screen-should-contain [
@@ -463,7 +463,7 @@ if ('onhashchange' in window) {
 <span id="L400" class="LineNr"> 400 </span>  <span class="Conceal">¦</span> type <span class="Constant">[3]</span>
 <span id="L401" class="LineNr"> 401 </span>  ]
 <span id="L402" class="LineNr"> 402 </span>  run [
-<span id="L403" class="LineNr"> 403 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L403" class="LineNr"> 403 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L404" class="LineNr"> 404 </span>  ]
 <span id="L405" class="LineNr"> 405 </span>  screen-should-contain [
 <span id="L406" class="LineNr"> 406 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
@@ -496,12 +496,12 @@ if ('onhashchange' in window) {
 <span id="L433" class="LineNr"> 433 </span>  <span class="Comment"># create an editor, type something, undo</span>
 <span id="L434" class="LineNr"> 434 </span>  assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span>
 <span id="L435" class="LineNr"> 435 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> <span class="Constant">[]</span>, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L436" class="LineNr"> 436 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L436" class="LineNr"> 436 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L437" class="LineNr"> 437 </span>  assume-console [
 <span id="L438" class="LineNr"> 438 </span>  <span class="Conceal">¦</span> type <span class="Constant">[012]</span>
 <span id="L439" class="LineNr"> 439 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L440" class="LineNr"> 440 </span>  ]
-<span id="L441" class="LineNr"> 441 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L441" class="LineNr"> 441 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L442" class="LineNr"> 442 </span>  screen-should-contain [
 <span id="L443" class="LineNr"> 443 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
 <span id="L444" class="LineNr"> 444 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
@@ -513,7 +513,7 @@ if ('onhashchange' in window) {
 <span id="L450" class="LineNr"> 450 </span>  <span class="Conceal">¦</span> press ctrl-y
 <span id="L451" class="LineNr"> 451 </span>  ]
 <span id="L452" class="LineNr"> 452 </span>  run [
-<span id="L453" class="LineNr"> 453 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L453" class="LineNr"> 453 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L454" class="LineNr"> 454 </span>  ]
 <span id="L455" class="LineNr"> 455 </span>  <span class="Comment"># all characters must be back</span>
 <span id="L456" class="LineNr"> 456 </span>  screen-should-contain [
@@ -527,7 +527,7 @@ if ('onhashchange' in window) {
 <span id="L464" class="LineNr"> 464 </span>  <span class="Conceal">¦</span> type <span class="Constant">[3]</span>
 <span id="L465" class="LineNr"> 465 </span>  ]
 <span id="L466" class="LineNr"> 466 </span>  run [
-<span id="L467" class="LineNr"> 467 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L467" class="LineNr"> 467 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L468" class="LineNr"> 468 </span>  ]
 <span id="L469" class="LineNr"> 469 </span>  screen-should-contain [
 <span id="L470" class="LineNr"> 470 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
@@ -545,17 +545,17 @@ if ('onhashchange' in window) {
 <span id="L482" class="LineNr"> 482 </span><span class="Constant">def</span>
 <span id="L483" class="LineNr"> 483 </span><span class="Constant">ghi]</span>
 <span id="L484" class="LineNr"> 484 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> contents, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L485" class="LineNr"> 485 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L485" class="LineNr"> 485 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L486" class="LineNr"> 486 </span>  assume-console [
 <span id="L487" class="LineNr"> 487 </span>  <span class="Conceal">¦</span> type <span class="Constant">[1]</span>
 <span id="L488" class="LineNr"> 488 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L489" class="LineNr"> 489 </span>  ]
-<span id="L490" class="LineNr"> 490 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L490" class="LineNr"> 490 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L491" class="LineNr"> 491 </span>  <span class="Comment"># do some more work</span>
 <span id="L492" class="LineNr"> 492 </span>  assume-console [
 <span id="L493" class="LineNr"> 493 </span>  <span class="Conceal">¦</span> type <span class="Constant">[0]</span>
 <span id="L494" class="LineNr"> 494 </span>  ]
-<span id="L495" class="LineNr"> 495 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L495" class="LineNr"> 495 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L496" class="LineNr"> 496 </span>  screen-should-contain [
 <span id="L497" class="LineNr"> 497 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
 <span id="L498" class="LineNr"> 498 </span>  <span class="Conceal">¦</span><span class="Constant"> .0abc      .</span>
@@ -568,7 +568,7 @@ if ('onhashchange' in window) {
 <span id="L505" class="LineNr"> 505 </span>  <span class="Conceal">¦</span> press ctrl-y
 <span id="L506" class="LineNr"> 506 </span>  ]
 <span id="L507" class="LineNr"> 507 </span>  run [
-<span id="L508" class="LineNr"> 508 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L508" class="LineNr"> 508 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L509" class="LineNr"> 509 </span>  ]
 <span id="L510" class="LineNr"> 510 </span>  <span class="Comment"># nothing should happen</span>
 <span id="L511" class="LineNr"> 511 </span>  screen-should-contain [
@@ -585,7 +585,7 @@ if ('onhashchange' in window) {
 <span id="L522" class="LineNr"> 522 </span>  <span class="Comment"># create an editor</span>
 <span id="L523" class="LineNr"> 523 </span>  assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span>
 <span id="L524" class="LineNr"> 524 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> <span class="Constant">[]</span>, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L525" class="LineNr"> 525 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L525" class="LineNr"> 525 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L526" class="LineNr"> 526 </span>  <span class="Comment"># insert some text and tabs, hit enter, some more text and tabs</span>
 <span id="L527" class="LineNr"> 527 </span>  assume-console [
 <span id="L528" class="LineNr"> 528 </span>  <span class="Conceal">¦</span> press tab
@@ -596,7 +596,7 @@ if ('onhashchange' in window) {
 <span id="L533" class="LineNr"> 533 </span>  <span class="Conceal">¦</span> press tab
 <span id="L534" class="LineNr"> 534 </span>  <span class="Conceal">¦</span> type <span class="Constant">[efg]</span>
 <span id="L535" class="LineNr"> 535 </span>  ]
-<span id="L536" class="LineNr"> 536 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L536" class="LineNr"> 536 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L537" class="LineNr"> 537 </span>  screen-should-contain [
 <span id="L538" class="LineNr"> 538 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
 <span id="L539" class="LineNr"> 539 </span>  <span class="Conceal">¦</span><span class="Constant"> .  ab  cd  .</span>
@@ -615,7 +615,7 @@ if ('onhashchange' in window) {
 <span id="L552" class="LineNr"> 552 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L553" class="LineNr"> 553 </span>  ]
 <span id="L554" class="LineNr"> 554 </span>  run [
-<span id="L555" class="LineNr"> 555 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L555" class="LineNr"> 555 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L556" class="LineNr"> 556 </span>  ]
 <span id="L557" class="LineNr"> 557 </span>  <span class="Comment"># typing in second line deleted, but not indent</span>
 <span id="L558" class="LineNr"> 558 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -636,7 +636,7 @@ if ('onhashchange' in window) {
 <span id="L573" class="LineNr"> 573 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L574" class="LineNr"> 574 </span>  ]
 <span id="L575" class="LineNr"> 575 </span>  run [
-<span id="L576" class="LineNr"> 576 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L576" class="LineNr"> 576 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L577" class="LineNr"> 577 </span>  ]
 <span id="L578" class="LineNr"> 578 </span>  <span class="Comment"># indent and newline deleted</span>
 <span id="L579" class="LineNr"> 579 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -656,7 +656,7 @@ if ('onhashchange' in window) {
 <span id="L593" class="LineNr"> 593 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L594" class="LineNr"> 594 </span>  ]
 <span id="L595" class="LineNr"> 595 </span>  run [
-<span id="L596" class="LineNr"> 596 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L596" class="LineNr"> 596 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L597" class="LineNr"> 597 </span>  ]
 <span id="L598" class="LineNr"> 598 </span>  <span class="Comment"># empty screen</span>
 <span id="L599" class="LineNr"> 599 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -676,7 +676,7 @@ if ('onhashchange' in window) {
 <span id="L613" class="LineNr"> 613 </span>  <span class="Conceal">¦</span> press ctrl-y
 <span id="L614" class="LineNr"> 614 </span>  ]
 <span id="L615" class="LineNr"> 615 </span>  run [
-<span id="L616" class="LineNr"> 616 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L616" class="LineNr"> 616 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L617" class="LineNr"> 617 </span>  ]
 <span id="L618" class="LineNr"> 618 </span>  <span class="Comment"># first line inserted</span>
 <span id="L619" class="LineNr"> 619 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -696,7 +696,7 @@ if ('onhashchange' in window) {
 <span id="L633" class="LineNr"> 633 </span>  <span class="Conceal">¦</span> press ctrl-y
 <span id="L634" class="LineNr"> 634 </span>  ]
 <span id="L635" class="LineNr"> 635 </span>  run [
-<span id="L636" class="LineNr"> 636 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L636" class="LineNr"> 636 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L637" class="LineNr"> 637 </span>  ]
 <span id="L638" class="LineNr"> 638 </span>  <span class="Comment"># newline and indent inserted</span>
 <span id="L639" class="LineNr"> 639 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -717,7 +717,7 @@ if ('onhashchange' in window) {
 <span id="L654" class="LineNr"> 654 </span>  <span class="Conceal">¦</span> press ctrl-y
 <span id="L655" class="LineNr"> 655 </span>  ]
 <span id="L656" class="LineNr"> 656 </span>  run [
-<span id="L657" class="LineNr"> 657 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L657" class="LineNr"> 657 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L658" class="LineNr"> 658 </span>  ]
 <span id="L659" class="LineNr"> 659 </span>  <span class="Comment"># indent and newline deleted</span>
 <span id="L660" class="LineNr"> 660 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -745,18 +745,18 @@ if ('onhashchange' in window) {
 <span id="L682" class="LineNr"> 682 </span><span class="Constant">def</span>
 <span id="L683" class="LineNr"> 683 </span><span class="Constant">ghi]</span>
 <span id="L684" class="LineNr"> 684 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> contents, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L685" class="LineNr"> 685 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L685" class="LineNr"> 685 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L686" class="LineNr"> 686 </span>  <span class="Comment"># move the cursor</span>
 <span id="L687" class="LineNr"> 687 </span>  assume-console [
 <span id="L688" class="LineNr"> 688 </span>  <span class="Conceal">¦</span> left-click<span class="Constant"> 3</span>,<span class="Constant"> 1</span>
 <span id="L689" class="LineNr"> 689 </span>  ]
-<span id="L690" class="LineNr"> 690 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L690" class="LineNr"> 690 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L691" class="LineNr"> 691 </span>  <span class="Comment"># undo</span>
 <span id="L692" class="LineNr"> 692 </span>  assume-console [
 <span id="L693" class="LineNr"> 693 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L694" class="LineNr"> 694 </span>  ]
 <span id="L695" class="LineNr"> 695 </span>  run [
-<span id="L696" class="LineNr"> 696 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L696" class="LineNr"> 696 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L697" class="LineNr"> 697 </span>  ]
 <span id="L698" class="LineNr"> 698 </span>  <span class="Comment"># click undone</span>
 <span id="L699" class="LineNr"> 699 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -770,7 +770,7 @@ if ('onhashchange' in window) {
 <span id="L707" class="LineNr"> 707 </span>  <span class="Conceal">¦</span> type <span class="Constant">[1]</span>
 <span id="L708" class="LineNr"> 708 </span>  ]
 <span id="L709" class="LineNr"> 709 </span>  run [
-<span id="L710" class="LineNr"> 710 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L710" class="LineNr"> 710 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L711" class="LineNr"> 711 </span>  ]
 <span id="L712" class="LineNr"> 712 </span>  screen-should-contain [
 <span id="L713" class="LineNr"> 713 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
@@ -842,7 +842,7 @@ if ('onhashchange' in window) {
 <span id="L779" class="LineNr"> 779 </span>  <span class="Conceal">¦</span> left-click<span class="Constant"> 3</span>,<span class="Constant"> 3</span>
 <span id="L780" class="LineNr"> 780 </span>  <span class="Conceal">¦</span> press right-arrow
 <span id="L781" class="LineNr"> 781 </span>  ]
-<span id="L782" class="LineNr"> 782 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L782" class="LineNr"> 782 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L783" class="LineNr"> 783 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
 <span id="L784" class="LineNr"> 784 </span>  4:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-column:offset</span>
 <span id="L785" class="LineNr"> 785 </span>  <span class="Comment"># screen scrolls</span>
@@ -861,7 +861,7 @@ if ('onhashchange' in window) {
 <span id="L798" class="LineNr"> 798 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L799" class="LineNr"> 799 </span>  ]
 <span id="L800" class="LineNr"> 800 </span>  run [
-<span id="L801" class="LineNr"> 801 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L801" class="LineNr"> 801 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L802" class="LineNr"> 802 </span>  ]
 <span id="L803" class="LineNr"> 803 </span>  <span class="Comment"># cursor moved back</span>
 <span id="L804" class="LineNr"> 804 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -882,7 +882,7 @@ if ('onhashchange' in window) {
 <span id="L819" class="LineNr"> 819 </span>  <span class="Conceal">¦</span> type <span class="Constant">[1]</span>
 <span id="L820" class="LineNr"> 820 </span>  ]
 <span id="L821" class="LineNr"> 821 </span>  run [
-<span id="L822" class="LineNr"> 822 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L822" class="LineNr"> 822 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L823" class="LineNr"> 823 </span>  ]
 <span id="L824" class="LineNr"> 824 </span>  screen-should-contain [
 <span id="L825" class="LineNr"> 825 </span>  <span class="Conceal">¦</span><span class="Constant"> .     .</span>
@@ -900,19 +900,19 @@ if ('onhashchange' in window) {
 <span id="L837" class="LineNr"> 837 </span><span class="Constant">def</span>
 <span id="L838" class="LineNr"> 838 </span><span class="Constant">ghi]</span>
 <span id="L839" class="LineNr"> 839 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> contents, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L840" class="LineNr"> 840 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L840" class="LineNr"> 840 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L841" class="LineNr"> 841 </span>  <span class="Comment"># move the cursor</span>
 <span id="L842" class="LineNr"> 842 </span>  assume-console [
 <span id="L843" class="LineNr"> 843 </span>  <span class="Conceal">¦</span> left-click<span class="Constant"> 3</span>,<span class="Constant"> 1</span>
 <span id="L844" class="LineNr"> 844 </span>  <span class="Conceal">¦</span> press left-arrow
 <span id="L845" class="LineNr"> 845 </span>  ]
-<span id="L846" class="LineNr"> 846 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L846" class="LineNr"> 846 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L847" class="LineNr"> 847 </span>  <span class="Comment"># undo</span>
 <span id="L848" class="LineNr"> 848 </span>  assume-console [
 <span id="L849" class="LineNr"> 849 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L850" class="LineNr"> 850 </span>  ]
 <span id="L851" class="LineNr"> 851 </span>  run [
-<span id="L852" class="LineNr"> 852 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L852" class="LineNr"> 852 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L853" class="LineNr"> 853 </span>  ]
 <span id="L854" class="LineNr"> 854 </span>  <span class="Comment"># cursor moves back</span>
 <span id="L855" class="LineNr"> 855 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -926,7 +926,7 @@ if ('onhashchange' in window) {
 <span id="L863" class="LineNr"> 863 </span>  <span class="Conceal">¦</span> type <span class="Constant">[1]</span>
 <span id="L864" class="LineNr"> 864 </span>  ]
 <span id="L865" class="LineNr"> 865 </span>  run [
-<span id="L866" class="LineNr"> 866 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L866" class="LineNr"> 866 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L867" class="LineNr"> 867 </span>  ]
 <span id="L868" class="LineNr"> 868 </span>  screen-should-contain [
 <span id="L869" class="LineNr"> 869 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
@@ -945,13 +945,13 @@ if ('onhashchange' in window) {
 <span id="L882" class="LineNr"> 882 </span><span class="Constant">def</span>
 <span id="L883" class="LineNr"> 883 </span><span class="Constant">ghi]</span>
 <span id="L884" class="LineNr"> 884 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> contents, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L885" class="LineNr"> 885 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L885" class="LineNr"> 885 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L886" class="LineNr"> 886 </span>  <span class="Comment"># move the cursor</span>
 <span id="L887" class="LineNr"> 887 </span>  assume-console [
 <span id="L888" class="LineNr"> 888 </span>  <span class="Conceal">¦</span> left-click<span class="Constant"> 3</span>,<span class="Constant"> 1</span>
 <span id="L889" class="LineNr"> 889 </span>  <span class="Conceal">¦</span> press up-arrow
 <span id="L890" class="LineNr"> 890 </span>  ]
-<span id="L891" class="LineNr"> 891 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L891" class="LineNr"> 891 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L892" class="LineNr"> 892 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
 <span id="L893" class="LineNr"> 893 </span>  4:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-column:offset</span>
 <span id="L894" class="LineNr"> 894 </span>  memory-should-contain [
@@ -963,7 +963,7 @@ if ('onhashchange' in window) {
 <span id="L900" class="LineNr"> 900 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L901" class="LineNr"> 901 </span>  ]
 <span id="L902" class="LineNr"> 902 </span>  run [
-<span id="L903" class="LineNr"> 903 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L903" class="LineNr"> 903 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L904" class="LineNr"> 904 </span>  ]
 <span id="L905" class="LineNr"> 905 </span>  <span class="Comment"># cursor moves back</span>
 <span id="L906" class="LineNr"> 906 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -977,7 +977,7 @@ if ('onhashchange' in window) {
 <span id="L914" class="LineNr"> 914 </span>  <span class="Conceal">¦</span> type <span class="Constant">[1]</span>
 <span id="L915" class="LineNr"> 915 </span>  ]
 <span id="L916" class="LineNr"> 916 </span>  run [
-<span id="L917" class="LineNr"> 917 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L917" class="LineNr"> 917 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L918" class="LineNr"> 918 </span>  ]
 <span id="L919" class="LineNr"> 919 </span>  screen-should-contain [
 <span id="L920" class="LineNr"> 920 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
@@ -996,19 +996,19 @@ if ('onhashchange' in window) {
 <span id="L933" class="LineNr"> 933 </span><span class="Constant">def</span>
 <span id="L934" class="LineNr"> 934 </span><span class="Constant">ghi]</span>
 <span id="L935" class="LineNr"> 935 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> contents, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L936" class="LineNr"> 936 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L936" class="LineNr"> 936 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L937" class="LineNr"> 937 </span>  <span class="Comment"># move the cursor</span>
 <span id="L938" class="LineNr"> 938 </span>  assume-console [
 <span id="L939" class="LineNr"> 939 </span>  <span class="Conceal">¦</span> left-click<span class="Constant"> 2</span>,<span class="Constant"> 1</span>
 <span id="L940" class="LineNr"> 940 </span>  <span class="Conceal">¦</span> press down-arrow
 <span id="L941" class="LineNr"> 941 </span>  ]
-<span id="L942" class="LineNr"> 942 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L942" class="LineNr"> 942 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L943" class="LineNr"> 943 </span>  <span class="Comment"># undo</span>
 <span id="L944" class="LineNr"> 944 </span>  assume-console [
 <span id="L945" class="LineNr"> 945 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L946" class="LineNr"> 946 </span>  ]
 <span id="L947" class="LineNr"> 947 </span>  run [
-<span id="L948" class="LineNr"> 948 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L948" class="LineNr"> 948 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L949" class="LineNr"> 949 </span>  ]
 <span id="L950" class="LineNr"> 950 </span>  <span class="Comment"># cursor moves back</span>
 <span id="L951" class="LineNr"> 951 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -1022,7 +1022,7 @@ if ('onhashchange' in window) {
 <span id="L959" class="LineNr"> 959 </span>  <span class="Conceal">¦</span> type <span class="Constant">[1]</span>
 <span id="L960" class="LineNr"> 960 </span>  ]
 <span id="L961" class="LineNr"> 961 </span>  run [
-<span id="L962" class="LineNr"> 962 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L962" class="LineNr"> 962 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L963" class="LineNr"> 963 </span>  ]
 <span id="L964" class="LineNr"> 964 </span>  screen-should-contain [
 <span id="L965" class="LineNr"> 965 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
@@ -1044,18 +1044,18 @@ if ('onhashchange' in window) {
 <span id="L981" class="LineNr"> 981 </span><span class="Constant">e</span>
 <span id="L982" class="LineNr"> 982 </span><span class="Constant">f]</span>
 <span id="L983" class="LineNr"> 983 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> contents, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L984" class="LineNr"> 984 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L984" class="LineNr"> 984 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L985" class="LineNr"> 985 </span>  <span class="Comment"># scroll the page</span>
 <span id="L986" class="LineNr"> 986 </span>  assume-console [
 <span id="L987" class="LineNr"> 987 </span>  <span class="Conceal">¦</span> press ctrl-f
 <span id="L988" class="LineNr"> 988 </span>  ]
-<span id="L989" class="LineNr"> 989 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L989" class="LineNr"> 989 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L990" class="LineNr"> 990 </span>  <span class="Comment"># undo</span>
 <span id="L991" class="LineNr"> 991 </span>  assume-console [
 <span id="L992" class="LineNr"> 992 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L993" class="LineNr"> 993 </span>  ]
 <span id="L994" class="LineNr"> 994 </span>  run [
-<span id="L995" class="LineNr"> 995 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L995" class="LineNr"> 995 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L996" class="LineNr"> 996 </span>  ]
 <span id="L997" class="LineNr"> 997 </span>  <span class="Comment"># screen should again show page 1</span>
 <span id="L998" class="LineNr"> 998 </span>  screen-should-contain [
@@ -1078,18 +1078,18 @@ if ('onhashchange' in window) {
 <span id="L1015" class="LineNr">1015 </span><span class="Constant">e</span>
 <span id="L1016" class="LineNr">1016 </span><span class="Constant">f]</span>
 <span id="L1017" class="LineNr">1017 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> contents, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L1018" class="LineNr">1018 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L1018" class="LineNr">1018 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L1019" class="LineNr">1019 </span>  <span class="Comment"># scroll the page</span>
 <span id="L1020" class="LineNr">1020 </span>  assume-console [
-<span id="L1021" class="LineNr">1021 </span>  <span class="Conceal">¦</span> press <a href='003-shortcuts.mu.html#L3500'>page-down</a>
+<span id="L1021" class="LineNr">1021 </span>  <span class="Conceal">¦</span> press <a href='003-shortcuts.mu.html#L3541'>page-down</a>
 <span id="L1022" class="LineNr">1022 </span>  ]
-<span id="L1023" class="LineNr">1023 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1023" class="LineNr">1023 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1024" class="LineNr">1024 </span>  <span class="Comment"># undo</span>
 <span id="L1025" class="LineNr">1025 </span>  assume-console [
 <span id="L1026" class="LineNr">1026 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L1027" class="LineNr">1027 </span>  ]
 <span id="L1028" class="LineNr">1028 </span>  run [
-<span id="L1029" class="LineNr">1029 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1029" class="LineNr">1029 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1030" class="LineNr">1030 </span>  ]
 <span id="L1031" class="LineNr">1031 </span>  <span class="Comment"># screen should again show page 1</span>
 <span id="L1032" class="LineNr">1032 </span>  screen-should-contain [
@@ -1112,19 +1112,19 @@ if ('onhashchange' in window) {
 <span id="L1049" class="LineNr">1049 </span><span class="Constant">e</span>
 <span id="L1050" class="LineNr">1050 </span><span class="Constant">f]</span>
 <span id="L1051" class="LineNr">1051 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> contents, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L1052" class="LineNr">1052 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L1052" class="LineNr">1052 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L1053" class="LineNr">1053 </span>  <span class="Comment"># scroll the page down and up</span>
 <span id="L1054" class="LineNr">1054 </span>  assume-console [
-<span id="L1055" class="LineNr">1055 </span>  <span class="Conceal">¦</span> press <a href='003-shortcuts.mu.html#L3500'>page-down</a>
+<span id="L1055" class="LineNr">1055 </span>  <span class="Conceal">¦</span> press <a href='003-shortcuts.mu.html#L3541'>page-down</a>
 <span id="L1056" class="LineNr">1056 </span>  <span class="Conceal">¦</span> press ctrl-b
 <span id="L1057" class="LineNr">1057 </span>  ]
-<span id="L1058" class="LineNr">1058 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1058" class="LineNr">1058 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1059" class="LineNr">1059 </span>  <span class="Comment"># undo</span>
 <span id="L1060" class="LineNr">1060 </span>  assume-console [
 <span id="L1061" class="LineNr">1061 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L1062" class="LineNr">1062 </span>  ]
 <span id="L1063" class="LineNr">1063 </span>  run [
-<span id="L1064" class="LineNr">1064 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1064" class="LineNr">1064 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1065" class="LineNr">1065 </span>  ]
 <span id="L1066" class="LineNr">1066 </span>  <span class="Comment"># screen should again show page 2</span>
 <span id="L1067" class="LineNr">1067 </span>  screen-should-contain [
@@ -1147,19 +1147,19 @@ if ('onhashchange' in window) {
 <span id="L1084" class="LineNr">1084 </span><span class="Constant">e</span>
 <span id="L1085" class="LineNr">1085 </span><span class="Constant">f]</span>
 <span id="L1086" class="LineNr">1086 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> contents, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L1087" class="LineNr">1087 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L1087" class="LineNr">1087 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L1088" class="LineNr">1088 </span>  <span class="Comment"># scroll the page down and up</span>
 <span id="L1089" class="LineNr">1089 </span>  assume-console [
-<span id="L1090" class="LineNr">1090 </span>  <span class="Conceal">¦</span> press <a href='003-shortcuts.mu.html#L3500'>page-down</a>
-<span id="L1091" class="LineNr">1091 </span>  <span class="Conceal">¦</span> press <a href='003-shortcuts.mu.html#L3723'>page-up</a>
+<span id="L1090" class="LineNr">1090 </span>  <span class="Conceal">¦</span> press <a href='003-shortcuts.mu.html#L3541'>page-down</a>
+<span id="L1091" class="LineNr">1091 </span>  <span class="Conceal">¦</span> press <a href='003-shortcuts.mu.html#L3764'>page-up</a>
 <span id="L1092" class="LineNr">1092 </span>  ]
-<span id="L1093" class="LineNr">1093 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1093" class="LineNr">1093 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1094" class="LineNr">1094 </span>  <span class="Comment"># undo</span>
 <span id="L1095" class="LineNr">1095 </span>  assume-console [
 <span id="L1096" class="LineNr">1096 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L1097" class="LineNr">1097 </span>  ]
 <span id="L1098" class="LineNr">1098 </span>  run [
-<span id="L1099" class="LineNr">1099 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1099" class="LineNr">1099 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1100" class="LineNr">1100 </span>  ]
 <span id="L1101" class="LineNr">1101 </span>  <span class="Comment"># screen should again show page 2</span>
 <span id="L1102" class="LineNr">1102 </span>  screen-should-contain [
@@ -1179,19 +1179,19 @@ if ('onhashchange' in window) {
 <span id="L1116" class="LineNr">1116 </span><span class="Constant">def</span>
 <span id="L1117" class="LineNr">1117 </span><span class="Constant">ghi]</span>
 <span id="L1118" class="LineNr">1118 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> contents, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L1119" class="LineNr">1119 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L1119" class="LineNr">1119 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L1120" class="LineNr">1120 </span>  <span class="Comment"># move the cursor, then to start of line</span>
 <span id="L1121" class="LineNr">1121 </span>  assume-console [
 <span id="L1122" class="LineNr">1122 </span>  <span class="Conceal">¦</span> left-click<span class="Constant"> 2</span>,<span class="Constant"> 1</span>
 <span id="L1123" class="LineNr">1123 </span>  <span class="Conceal">¦</span> press ctrl-a
 <span id="L1124" class="LineNr">1124 </span>  ]
-<span id="L1125" class="LineNr">1125 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1125" class="LineNr">1125 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1126" class="LineNr">1126 </span>  <span class="Comment"># undo</span>
 <span id="L1127" class="LineNr">1127 </span>  assume-console [
 <span id="L1128" class="LineNr">1128 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L1129" class="LineNr">1129 </span>  ]
 <span id="L1130" class="LineNr">1130 </span>  run [
-<span id="L1131" class="LineNr">1131 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1131" class="LineNr">1131 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1132" class="LineNr">1132 </span>  ]
 <span id="L1133" class="LineNr">1133 </span>  <span class="Comment"># cursor moves back</span>
 <span id="L1134" class="LineNr">1134 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -1205,7 +1205,7 @@ if ('onhashchange' in window) {
 <span id="L1142" class="LineNr">1142 </span>  <span class="Conceal">¦</span> type <span class="Constant">[1]</span>
 <span id="L1143" class="LineNr">1143 </span>  ]
 <span id="L1144" class="LineNr">1144 </span>  run [
-<span id="L1145" class="LineNr">1145 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1145" class="LineNr">1145 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1146" class="LineNr">1146 </span>  ]
 <span id="L1147" class="LineNr">1147 </span>  screen-should-contain [
 <span id="L1148" class="LineNr">1148 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
@@ -1224,19 +1224,19 @@ if ('onhashchange' in window) {
 <span id="L1161" class="LineNr">1161 </span><span class="Constant">def</span>
 <span id="L1162" class="LineNr">1162 </span><span class="Constant">ghi]</span>
 <span id="L1163" class="LineNr">1163 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> contents, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L1164" class="LineNr">1164 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L1164" class="LineNr">1164 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L1165" class="LineNr">1165 </span>  <span class="Comment"># move the cursor, then to start of line</span>
 <span id="L1166" class="LineNr">1166 </span>  assume-console [
 <span id="L1167" class="LineNr">1167 </span>  <span class="Conceal">¦</span> left-click<span class="Constant"> 2</span>,<span class="Constant"> 1</span>
 <span id="L1168" class="LineNr">1168 </span>  <span class="Conceal">¦</span> press home
 <span id="L1169" class="LineNr">1169 </span>  ]
-<span id="L1170" class="LineNr">1170 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1170" class="LineNr">1170 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1171" class="LineNr">1171 </span>  <span class="Comment"># undo</span>
 <span id="L1172" class="LineNr">1172 </span>  assume-console [
 <span id="L1173" class="LineNr">1173 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L1174" class="LineNr">1174 </span>  ]
 <span id="L1175" class="LineNr">1175 </span>  run [
-<span id="L1176" class="LineNr">1176 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1176" class="LineNr">1176 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1177" class="LineNr">1177 </span>  ]
 <span id="L1178" class="LineNr">1178 </span>  <span class="Comment"># cursor moves back</span>
 <span id="L1179" class="LineNr">1179 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -1250,7 +1250,7 @@ if ('onhashchange' in window) {
 <span id="L1187" class="LineNr">1187 </span>  <span class="Conceal">¦</span> type <span class="Constant">[1]</span>
 <span id="L1188" class="LineNr">1188 </span>  ]
 <span id="L1189" class="LineNr">1189 </span>  run [
-<span id="L1190" class="LineNr">1190 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1190" class="LineNr">1190 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1191" class="LineNr">1191 </span>  ]
 <span id="L1192" class="LineNr">1192 </span>  screen-should-contain [
 <span id="L1193" class="LineNr">1193 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
@@ -1269,19 +1269,19 @@ if ('onhashchange' in window) {
 <span id="L1206" class="LineNr">1206 </span><span class="Constant">def</span>
 <span id="L1207" class="LineNr">1207 </span><span class="Constant">ghi]</span>
 <span id="L1208" class="LineNr">1208 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> contents, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L1209" class="LineNr">1209 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L1209" class="LineNr">1209 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L1210" class="LineNr">1210 </span>  <span class="Comment"># move the cursor, then to start of line</span>
 <span id="L1211" class="LineNr">1211 </span>  assume-console [
 <span id="L1212" class="LineNr">1212 </span>  <span class="Conceal">¦</span> left-click<span class="Constant"> 2</span>,<span class="Constant"> 1</span>
 <span id="L1213" class="LineNr">1213 </span>  <span class="Conceal">¦</span> press ctrl-e
 <span id="L1214" class="LineNr">1214 </span>  ]
-<span id="L1215" class="LineNr">1215 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1215" class="LineNr">1215 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1216" class="LineNr">1216 </span>  <span class="Comment"># undo</span>
 <span id="L1217" class="LineNr">1217 </span>  assume-console [
 <span id="L1218" class="LineNr">1218 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L1219" class="LineNr">1219 </span>  ]
 <span id="L1220" class="LineNr">1220 </span>  run [
-<span id="L1221" class="LineNr">1221 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1221" class="LineNr">1221 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1222" class="LineNr">1222 </span>  ]
 <span id="L1223" class="LineNr">1223 </span>  <span class="Comment"># cursor moves back</span>
 <span id="L1224" class="LineNr">1224 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -1295,7 +1295,7 @@ if ('onhashchange' in window) {
 <span id="L1232" class="LineNr">1232 </span>  <span class="Conceal">¦</span> type <span class="Constant">[1]</span>
 <span id="L1233" class="LineNr">1233 </span>  ]
 <span id="L1234" class="LineNr">1234 </span>  run [
-<span id="L1235" class="LineNr">1235 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1235" class="LineNr">1235 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1236" class="LineNr">1236 </span>  ]
 <span id="L1237" class="LineNr">1237 </span>  screen-should-contain [
 <span id="L1238" class="LineNr">1238 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
@@ -1314,19 +1314,19 @@ if ('onhashchange' in window) {
 <span id="L1251" class="LineNr">1251 </span><span class="Constant">def</span>
 <span id="L1252" class="LineNr">1252 </span><span class="Constant">ghi]</span>
 <span id="L1253" class="LineNr">1253 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> contents, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L1254" class="LineNr">1254 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L1254" class="LineNr">1254 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L1255" class="LineNr">1255 </span>  <span class="Comment"># move the cursor, then to start of line</span>
 <span id="L1256" class="LineNr">1256 </span>  assume-console [
 <span id="L1257" class="LineNr">1257 </span>  <span class="Conceal">¦</span> left-click<span class="Constant"> 2</span>,<span class="Constant"> 1</span>
 <span id="L1258" class="LineNr">1258 </span>  <span class="Conceal">¦</span> press end
 <span id="L1259" class="LineNr">1259 </span>  ]
-<span id="L1260" class="LineNr">1260 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1260" class="LineNr">1260 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1261" class="LineNr">1261 </span>  <span class="Comment"># undo</span>
 <span id="L1262" class="LineNr">1262 </span>  assume-console [
 <span id="L1263" class="LineNr">1263 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L1264" class="LineNr">1264 </span>  ]
 <span id="L1265" class="LineNr">1265 </span>  run [
-<span id="L1266" class="LineNr">1266 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1266" class="LineNr">1266 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1267" class="LineNr">1267 </span>  ]
 <span id="L1268" class="LineNr">1268 </span>  <span class="Comment"># cursor moves back</span>
 <span id="L1269" class="LineNr">1269 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -1340,7 +1340,7 @@ if ('onhashchange' in window) {
 <span id="L1277" class="LineNr">1277 </span>  <span class="Conceal">¦</span> type <span class="Constant">[1]</span>
 <span id="L1278" class="LineNr">1278 </span>  ]
 <span id="L1279" class="LineNr">1279 </span>  run [
-<span id="L1280" class="LineNr">1280 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1280" class="LineNr">1280 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1281" class="LineNr">1281 </span>  ]
 <span id="L1282" class="LineNr">1282 </span>  screen-should-contain [
 <span id="L1283" class="LineNr">1283 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
@@ -1359,7 +1359,7 @@ if ('onhashchange' in window) {
 <span id="L1296" class="LineNr">1296 </span><span class="Constant">def</span>
 <span id="L1297" class="LineNr">1297 </span><span class="Constant">ghi]</span>
 <span id="L1298" class="LineNr">1298 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> contents, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L1299" class="LineNr">1299 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L1299" class="LineNr">1299 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L1300" class="LineNr">1300 </span>  <span class="Comment"># move the cursor</span>
 <span id="L1301" class="LineNr">1301 </span>  assume-console [
 <span id="L1302" class="LineNr">1302 </span>  <span class="Conceal">¦</span> left-click<span class="Constant"> 2</span>,<span class="Constant"> 1</span>
@@ -1367,7 +1367,7 @@ if ('onhashchange' in window) {
 <span id="L1304" class="LineNr">1304 </span>  <span class="Conceal">¦</span> press right-arrow
 <span id="L1305" class="LineNr">1305 </span>  <span class="Conceal">¦</span> press up-arrow
 <span id="L1306" class="LineNr">1306 </span>  ]
-<span id="L1307" class="LineNr">1307 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1307" class="LineNr">1307 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1308" class="LineNr">1308 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
 <span id="L1309" class="LineNr">1309 </span>  4:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-column:offset</span>
 <span id="L1310" class="LineNr">1310 </span>  memory-should-contain [
@@ -1379,7 +1379,7 @@ if ('onhashchange' in window) {
 <span id="L1316" class="LineNr">1316 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L1317" class="LineNr">1317 </span>  ]
 <span id="L1318" class="LineNr">1318 </span>  run [
-<span id="L1319" class="LineNr">1319 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1319" class="LineNr">1319 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1320" class="LineNr">1320 </span>  ]
 <span id="L1321" class="LineNr">1321 </span>  <span class="Comment"># up-arrow is undone</span>
 <span id="L1322" class="LineNr">1322 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -1393,7 +1393,7 @@ if ('onhashchange' in window) {
 <span id="L1330" class="LineNr">1330 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L1331" class="LineNr">1331 </span>  ]
 <span id="L1332" class="LineNr">1332 </span>  run [
-<span id="L1333" class="LineNr">1333 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1333" class="LineNr">1333 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1334" class="LineNr">1334 </span>  ]
 <span id="L1335" class="LineNr">1335 </span>  <span class="Comment"># both right-arrows are undone</span>
 <span id="L1336" class="LineNr">1336 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -1414,18 +1414,18 @@ if ('onhashchange' in window) {
 <span id="L1351" class="LineNr">1351 </span><span class="Constant">def</span>
 <span id="L1352" class="LineNr">1352 </span><span class="Constant">ghi]</span>
 <span id="L1353" class="LineNr">1353 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> contents, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L1354" class="LineNr">1354 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L1354" class="LineNr">1354 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L1355" class="LineNr">1355 </span>  assume-console [
 <span id="L1356" class="LineNr">1356 </span>  <span class="Conceal">¦</span> left-click<span class="Constant"> 3</span>,<span class="Constant"> 1</span>
 <span id="L1357" class="LineNr">1357 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L1358" class="LineNr">1358 </span>  ]
-<span id="L1359" class="LineNr">1359 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1359" class="LineNr">1359 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1360" class="LineNr">1360 </span>  <span class="Comment"># redo</span>
 <span id="L1361" class="LineNr">1361 </span>  assume-console [
 <span id="L1362" class="LineNr">1362 </span>  <span class="Conceal">¦</span> press ctrl-y
 <span id="L1363" class="LineNr">1363 </span>  ]
 <span id="L1364" class="LineNr">1364 </span>  run [
-<span id="L1365" class="LineNr">1365 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1365" class="LineNr">1365 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1366" class="LineNr">1366 </span>  ]
 <span id="L1367" class="LineNr">1367 </span>  <span class="Comment"># cursor moves to left-click</span>
 <span id="L1368" class="LineNr">1368 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -1439,7 +1439,7 @@ if ('onhashchange' in window) {
 <span id="L1376" class="LineNr">1376 </span>  <span class="Conceal">¦</span> type <span class="Constant">[1]</span>
 <span id="L1377" class="LineNr">1377 </span>  ]
 <span id="L1378" class="LineNr">1378 </span>  run [
-<span id="L1379" class="LineNr">1379 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1379" class="LineNr">1379 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1380" class="LineNr">1380 </span>  ]
 <span id="L1381" class="LineNr">1381 </span>  screen-should-contain [
 <span id="L1382" class="LineNr">1382 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
@@ -1469,13 +1469,13 @@ if ('onhashchange' in window) {
 <span id="L1406" class="LineNr">1406 </span>  <span class="Comment"># create an editor, type some text, move the cursor, type some more text</span>
 <span id="L1407" class="LineNr">1407 </span>  assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span>
 <span id="L1408" class="LineNr">1408 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> <span class="Constant">[]</span>, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L1409" class="LineNr">1409 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L1409" class="LineNr">1409 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L1410" class="LineNr">1410 </span>  assume-console [
 <span id="L1411" class="LineNr">1411 </span>  <span class="Conceal">¦</span> type <span class="Constant">[abc]</span>
 <span id="L1412" class="LineNr">1412 </span>  <span class="Conceal">¦</span> left-click<span class="Constant"> 1</span>,<span class="Constant"> 1</span>
 <span id="L1413" class="LineNr">1413 </span>  <span class="Conceal">¦</span> type <span class="Constant">[d]</span>
 <span id="L1414" class="LineNr">1414 </span>  ]
-<span id="L1415" class="LineNr">1415 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1415" class="LineNr">1415 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1416" class="LineNr">1416 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
 <span id="L1417" class="LineNr">1417 </span>  4:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-column:offset</span>
 <span id="L1418" class="LineNr">1418 </span>  screen-should-contain [
@@ -1493,7 +1493,7 @@ if ('onhashchange' in window) {
 <span id="L1430" class="LineNr">1430 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L1431" class="LineNr">1431 </span>  ]
 <span id="L1432" class="LineNr">1432 </span>  run [
-<span id="L1433" class="LineNr">1433 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1433" class="LineNr">1433 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1434" class="LineNr">1434 </span>  <span class="Conceal">¦</span> 3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
 <span id="L1435" class="LineNr">1435 </span>  <span class="Conceal">¦</span> 4:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-column:offset</span>
 <span id="L1436" class="LineNr">1436 </span>  ]
@@ -1513,7 +1513,7 @@ if ('onhashchange' in window) {
 <span id="L1450" class="LineNr">1450 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L1451" class="LineNr">1451 </span>  ]
 <span id="L1452" class="LineNr">1452 </span>  run [
-<span id="L1453" class="LineNr">1453 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1453" class="LineNr">1453 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1454" class="LineNr">1454 </span>  <span class="Conceal">¦</span> 3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
 <span id="L1455" class="LineNr">1455 </span>  <span class="Conceal">¦</span> 4:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-column:offset</span>
 <span id="L1456" class="LineNr">1456 </span>  ]
@@ -1533,7 +1533,7 @@ if ('onhashchange' in window) {
 <span id="L1470" class="LineNr">1470 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L1471" class="LineNr">1471 </span>  ]
 <span id="L1472" class="LineNr">1472 </span>  run [
-<span id="L1473" class="LineNr">1473 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1473" class="LineNr">1473 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1474" class="LineNr">1474 </span>  <span class="Conceal">¦</span> 3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
 <span id="L1475" class="LineNr">1475 </span>  <span class="Conceal">¦</span> 4:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-column:offset</span>
 <span id="L1476" class="LineNr">1476 </span>  ]
@@ -1553,7 +1553,7 @@ if ('onhashchange' in window) {
 <span id="L1490" class="LineNr">1490 </span>  <span class="Conceal">¦</span> press ctrl-y
 <span id="L1491" class="LineNr">1491 </span>  ]
 <span id="L1492" class="LineNr">1492 </span>  run [
-<span id="L1493" class="LineNr">1493 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1493" class="LineNr">1493 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1494" class="LineNr">1494 </span>  <span class="Conceal">¦</span> 3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
 <span id="L1495" class="LineNr">1495 </span>  <span class="Conceal">¦</span> 4:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-column:offset</span>
 <span id="L1496" class="LineNr">1496 </span>  ]
@@ -1573,7 +1573,7 @@ if ('onhashchange' in window) {
 <span id="L1510" class="LineNr">1510 </span>  <span class="Conceal">¦</span> press ctrl-y
 <span id="L1511" class="LineNr">1511 </span>  ]
 <span id="L1512" class="LineNr">1512 </span>  run [
-<span id="L1513" class="LineNr">1513 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1513" class="LineNr">1513 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1514" class="LineNr">1514 </span>  <span class="Conceal">¦</span> 3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
 <span id="L1515" class="LineNr">1515 </span>  <span class="Conceal">¦</span> 4:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-column:offset</span>
 <span id="L1516" class="LineNr">1516 </span>  ]
@@ -1594,7 +1594,7 @@ if ('onhashchange' in window) {
 <span id="L1531" class="LineNr">1531 </span>  <span class="Conceal">¦</span> press ctrl-y
 <span id="L1532" class="LineNr">1532 </span>  ]
 <span id="L1533" class="LineNr">1533 </span>  run [
-<span id="L1534" class="LineNr">1534 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1534" class="LineNr">1534 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1535" class="LineNr">1535 </span>  <span class="Conceal">¦</span> 3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
 <span id="L1536" class="LineNr">1536 </span>  <span class="Conceal">¦</span> 4:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-column:offset</span>
 <span id="L1537" class="LineNr">1537 </span>  ]
@@ -1618,14 +1618,14 @@ if ('onhashchange' in window) {
 <span id="L1555" class="LineNr">1555 </span>  <span class="Comment"># create an editor</span>
 <span id="L1556" class="LineNr">1556 </span>  assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span>
 <span id="L1557" class="LineNr">1557 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> <span class="Constant">[]</span>, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L1558" class="LineNr">1558 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L1558" class="LineNr">1558 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L1559" class="LineNr">1559 </span>  <span class="Comment"># insert some text and hit backspace</span>
 <span id="L1560" class="LineNr">1560 </span>  assume-console [
 <span id="L1561" class="LineNr">1561 </span>  <span class="Conceal">¦</span> type <span class="Constant">[abc]</span>
 <span id="L1562" class="LineNr">1562 </span>  <span class="Conceal">¦</span> press backspace
 <span id="L1563" class="LineNr">1563 </span>  <span class="Conceal">¦</span> press backspace
 <span id="L1564" class="LineNr">1564 </span>  ]
-<span id="L1565" class="LineNr">1565 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1565" class="LineNr">1565 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1566" class="LineNr">1566 </span>  screen-should-contain [
 <span id="L1567" class="LineNr">1567 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
 <span id="L1568" class="LineNr">1568 </span>  <span class="Conceal">¦</span><span class="Constant"> .a         .</span>
@@ -1643,7 +1643,7 @@ if ('onhashchange' in window) {
 <span id="L1580" class="LineNr">1580 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L1581" class="LineNr">1581 </span>  ]
 <span id="L1582" class="LineNr">1582 </span>  run [
-<span id="L1583" class="LineNr">1583 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1583" class="LineNr">1583 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1584" class="LineNr">1584 </span>  ]
 <span id="L1585" class="LineNr">1585 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
 <span id="L1586" class="LineNr">1586 </span>  4:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-column:offset</span>
@@ -1662,7 +1662,7 @@ if ('onhashchange' in window) {
 <span id="L1599" class="LineNr">1599 </span>  <span class="Conceal">¦</span> press ctrl-y
 <span id="L1600" class="LineNr">1600 </span>  ]
 <span id="L1601" class="LineNr">1601 </span>  run [
-<span id="L1602" class="LineNr">1602 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1602" class="LineNr">1602 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1603" class="LineNr">1603 </span>  ]
 <span id="L1604" class="LineNr">1604 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
 <span id="L1605" class="LineNr">1605 </span>  4:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-column:offset</span>
@@ -1763,7 +1763,7 @@ if ('onhashchange' in window) {
 <span id="L1700" class="LineNr">1700 </span>  <span class="Comment"># create an editor</span>
 <span id="L1701" class="LineNr">1701 </span>  assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span>
 <span id="L1702" class="LineNr">1702 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> <span class="Constant">[]</span>, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L1703" class="LineNr">1703 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L1703" class="LineNr">1703 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L1704" class="LineNr">1704 </span>  <span class="Comment"># insert some text and hit delete and backspace a few times</span>
 <span id="L1705" class="LineNr">1705 </span>  assume-console [
 <span id="L1706" class="LineNr">1706 </span>  <span class="Conceal">¦</span> type <span class="Constant">[abcdef]</span>
@@ -1773,7 +1773,7 @@ if ('onhashchange' in window) {
 <span id="L1710" class="LineNr">1710 </span>  <span class="Conceal">¦</span> press delete
 <span id="L1711" class="LineNr">1711 </span>  <span class="Conceal">¦</span> press delete
 <span id="L1712" class="LineNr">1712 </span>  ]
-<span id="L1713" class="LineNr">1713 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1713" class="LineNr">1713 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1714" class="LineNr">1714 </span>  screen-should-contain [
 <span id="L1715" class="LineNr">1715 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
 <span id="L1716" class="LineNr">1716 </span>  <span class="Conceal">¦</span><span class="Constant"> .af        .</span>
@@ -1791,7 +1791,7 @@ if ('onhashchange' in window) {
 <span id="L1728" class="LineNr">1728 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L1729" class="LineNr">1729 </span>  ]
 <span id="L1730" class="LineNr">1730 </span>  run [
-<span id="L1731" class="LineNr">1731 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1731" class="LineNr">1731 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1732" class="LineNr">1732 </span>  ]
 <span id="L1733" class="LineNr">1733 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
 <span id="L1734" class="LineNr">1734 </span>  4:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-column:offset</span>
@@ -1810,7 +1810,7 @@ if ('onhashchange' in window) {
 <span id="L1747" class="LineNr">1747 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L1748" class="LineNr">1748 </span>  ]
 <span id="L1749" class="LineNr">1749 </span>  run [
-<span id="L1750" class="LineNr">1750 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1750" class="LineNr">1750 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1751" class="LineNr">1751 </span>  ]
 <span id="L1752" class="LineNr">1752 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
 <span id="L1753" class="LineNr">1753 </span>  4:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-column:offset</span>
@@ -1829,7 +1829,7 @@ if ('onhashchange' in window) {
 <span id="L1766" class="LineNr">1766 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L1767" class="LineNr">1767 </span>  ]
 <span id="L1768" class="LineNr">1768 </span>  run [
-<span id="L1769" class="LineNr">1769 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1769" class="LineNr">1769 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1770" class="LineNr">1770 </span>  ]
 <span id="L1771" class="LineNr">1771 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
 <span id="L1772" class="LineNr">1772 </span>  4:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-column:offset</span>
@@ -1848,7 +1848,7 @@ if ('onhashchange' in window) {
 <span id="L1785" class="LineNr">1785 </span>  <span class="Conceal">¦</span> press ctrl-y
 <span id="L1786" class="LineNr">1786 </span>  ]
 <span id="L1787" class="LineNr">1787 </span>  run [
-<span id="L1788" class="LineNr">1788 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1788" class="LineNr">1788 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1789" class="LineNr">1789 </span>  ]
 <span id="L1790" class="LineNr">1790 </span>  <span class="Comment"># first line inserted</span>
 <span id="L1791" class="LineNr">1791 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -1868,7 +1868,7 @@ if ('onhashchange' in window) {
 <span id="L1805" class="LineNr">1805 </span>  <span class="Conceal">¦</span> press ctrl-y
 <span id="L1806" class="LineNr">1806 </span>  ]
 <span id="L1807" class="LineNr">1807 </span>  run [
-<span id="L1808" class="LineNr">1808 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1808" class="LineNr">1808 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1809" class="LineNr">1809 </span>  ]
 <span id="L1810" class="LineNr">1810 </span>  <span class="Comment"># first line inserted</span>
 <span id="L1811" class="LineNr">1811 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -1888,7 +1888,7 @@ if ('onhashchange' in window) {
 <span id="L1825" class="LineNr">1825 </span>  <span class="Conceal">¦</span> press ctrl-y
 <span id="L1826" class="LineNr">1826 </span>  ]
 <span id="L1827" class="LineNr">1827 </span>  run [
-<span id="L1828" class="LineNr">1828 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1828" class="LineNr">1828 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1829" class="LineNr">1829 </span>  ]
 <span id="L1830" class="LineNr">1830 </span>  <span class="Comment"># first line inserted</span>
 <span id="L1831" class="LineNr">1831 </span>  3:num/<span class="Special">raw</span> <span class="Special">&lt;-</span> get *e, <span class="Constant">cursor-row:offset</span>
@@ -1954,13 +1954,13 @@ if ('onhashchange' in window) {
 <span id="L1891" class="LineNr">1891 </span>  contents:text <span class="Special">&lt;-</span> new <span class="Constant">[abc</span>
 <span id="L1892" class="LineNr">1892 </span><span class="Constant">def]</span>
 <span id="L1893" class="LineNr">1893 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> contents, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L1894" class="LineNr">1894 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L1894" class="LineNr">1894 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L1895" class="LineNr">1895 </span>  <span class="Comment"># insert some text and hit delete and backspace a few times</span>
 <span id="L1896" class="LineNr">1896 </span>  assume-console [
 <span id="L1897" class="LineNr">1897 </span>  <span class="Conceal">¦</span> left-click<span class="Constant"> 1</span>,<span class="Constant"> 1</span>
 <span id="L1898" class="LineNr">1898 </span>  <span class="Conceal">¦</span> press ctrl-k
 <span id="L1899" class="LineNr">1899 </span>  ]
-<span id="L1900" class="LineNr">1900 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1900" class="LineNr">1900 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1901" class="LineNr">1901 </span>  screen-should-contain [
 <span id="L1902" class="LineNr">1902 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
 <span id="L1903" class="LineNr">1903 </span>  <span class="Conceal">¦</span><span class="Constant"> .a         .</span>
@@ -1979,7 +1979,7 @@ if ('onhashchange' in window) {
 <span id="L1916" class="LineNr">1916 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L1917" class="LineNr">1917 </span>  ]
 <span id="L1918" class="LineNr">1918 </span>  run [
-<span id="L1919" class="LineNr">1919 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1919" class="LineNr">1919 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1920" class="LineNr">1920 </span>  ]
 <span id="L1921" class="LineNr">1921 </span>  screen-should-contain [
 <span id="L1922" class="LineNr">1922 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
@@ -1999,7 +1999,7 @@ if ('onhashchange' in window) {
 <span id="L1936" class="LineNr">1936 </span>  <span class="Conceal">¦</span> press ctrl-y
 <span id="L1937" class="LineNr">1937 </span>  ]
 <span id="L1938" class="LineNr">1938 </span>  run [
-<span id="L1939" class="LineNr">1939 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1939" class="LineNr">1939 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1940" class="LineNr">1940 </span>  ]
 <span id="L1941" class="LineNr">1941 </span>  <span class="Comment"># first line inserted</span>
 <span id="L1942" class="LineNr">1942 </span>  screen-should-contain [
@@ -2020,7 +2020,7 @@ if ('onhashchange' in window) {
 <span id="L1957" class="LineNr">1957 </span>  <span class="Conceal">¦</span> type <span class="Constant">[1]</span>
 <span id="L1958" class="LineNr">1958 </span>  ]
 <span id="L1959" class="LineNr">1959 </span>  run [
-<span id="L1960" class="LineNr">1960 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L1960" class="LineNr">1960 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L1961" class="LineNr">1961 </span>  ]
 <span id="L1962" class="LineNr">1962 </span>  screen-should-contain [
 <span id="L1963" class="LineNr">1963 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
@@ -2031,10 +2031,10 @@ if ('onhashchange' in window) {
 <span id="L1968" class="LineNr">1968 </span>  ]
 <span id="L1969" class="LineNr">1969 </span>]
 <span id="L1970" class="LineNr">1970 </span>
-<span id="L1971" class="LineNr">1971 </span><span class="muRecipe">after</span> <span class="Constant"><a href='003-shortcuts.mu.html#L2434'>&lt;delete-to-end-of-line-begin&gt;</a></span> [
+<span id="L1971" class="LineNr">1971 </span><span class="muRecipe">after</span> <span class="Constant"><a href='003-shortcuts.mu.html#L2475'>&lt;delete-to-end-of-line-begin&gt;</a></span> [
 <span id="L1972" class="LineNr">1972 </span>  top-before:&amp;:<a href='../065duplex_list.mu.html#L3'>duplex-list</a>:char <span class="Special">&lt;-</span> get *editor, <span class="Constant">top-of-screen:offset</span>
 <span id="L1973" class="LineNr">1973 </span>]
-<span id="L1974" class="LineNr">1974 </span><span class="muRecipe">before</span> <span class="Constant"><a href='003-shortcuts.mu.html#L2436'>&lt;delete-to-end-of-line-end&gt;</a></span> [
+<span id="L1974" class="LineNr">1974 </span><span class="muRecipe">before</span> <span class="Constant"><a href='003-shortcuts.mu.html#L2477'>&lt;delete-to-end-of-line-end&gt;</a></span> [
 <span id="L1975" class="LineNr">1975 </span>  <span class="Delimiter">{</span>
 <span id="L1976" class="LineNr">1976 </span>  <span class="Conceal">¦</span> <span class="muControl">break-unless</span> deleted-cells  <span class="Comment"># delete failed; don't add an undo operation</span>
 <span id="L1977" class="LineNr">1977 </span>  <span class="Conceal">¦</span> top-after:&amp;:<a href='../065duplex_list.mu.html#L3'>duplex-list</a>:char <span class="Special">&lt;-</span> get *editor, <span class="Constant">top-of-screen:offset</span>
@@ -2057,13 +2057,13 @@ if ('onhashchange' in window) {
 <span id="L1994" class="LineNr">1994 </span>  contents:text <span class="Special">&lt;-</span> new <span class="Constant">[abc</span>
 <span id="L1995" class="LineNr">1995 </span><span class="Constant">def]</span>
 <span id="L1996" class="LineNr">1996 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> contents, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L1997" class="LineNr">1997 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L1997" class="LineNr">1997 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L1998" class="LineNr">1998 </span>  <span class="Comment"># insert some text and hit delete and backspace a few times</span>
 <span id="L1999" class="LineNr">1999 </span>  assume-console [
 <span id="L2000" class="LineNr">2000 </span>  <span class="Conceal">¦</span> left-click<span class="Constant"> 1</span>,<span class="Constant"> 2</span>
 <span id="L2001" class="LineNr">2001 </span>  <span class="Conceal">¦</span> press ctrl-u
 <span id="L2002" class="LineNr">2002 </span>  ]
-<span id="L2003" class="LineNr">2003 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L2003" class="LineNr">2003 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L2004" class="LineNr">2004 </span>  screen-should-contain [
 <span id="L2005" class="LineNr">2005 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
 <span id="L2006" class="LineNr">2006 </span>  <span class="Conceal">¦</span><span class="Constant"> .c         .</span>
@@ -2082,7 +2082,7 @@ if ('onhashchange' in window) {
 <span id="L2019" class="LineNr">2019 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L2020" class="LineNr">2020 </span>  ]
 <span id="L2021" class="LineNr">2021 </span>  run [
-<span id="L2022" class="LineNr">2022 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L2022" class="LineNr">2022 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L2023" class="LineNr">2023 </span>  ]
 <span id="L2024" class="LineNr">2024 </span>  screen-should-contain [
 <span id="L2025" class="LineNr">2025 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
@@ -2102,7 +2102,7 @@ if ('onhashchange' in window) {
 <span id="L2039" class="LineNr">2039 </span>  <span class="Conceal">¦</span> press ctrl-y
 <span id="L2040" class="LineNr">2040 </span>  ]
 <span id="L2041" class="LineNr">2041 </span>  run [
-<span id="L2042" class="LineNr">2042 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L2042" class="LineNr">2042 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L2043" class="LineNr">2043 </span>  ]
 <span id="L2044" class="LineNr">2044 </span>  <span class="Comment"># first line inserted</span>
 <span id="L2045" class="LineNr">2045 </span>  screen-should-contain [
@@ -2123,7 +2123,7 @@ if ('onhashchange' in window) {
 <span id="L2060" class="LineNr">2060 </span>  <span class="Conceal">¦</span> type <span class="Constant">[1]</span>
 <span id="L2061" class="LineNr">2061 </span>  ]
 <span id="L2062" class="LineNr">2062 </span>  run [
-<span id="L2063" class="LineNr">2063 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L2063" class="LineNr">2063 </span>  <span class="Conceal">¦</span> <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L2064" class="LineNr">2064 </span>  ]
 <span id="L2065" class="LineNr">2065 </span>  screen-should-contain [
 <span id="L2066" class="LineNr">2066 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
@@ -2134,10 +2134,10 @@ if ('onhashchange' in window) {
 <span id="L2071" class="LineNr">2071 </span>  ]
 <span id="L2072" class="LineNr">2072 </span>]
 <span id="L2073" class="LineNr">2073 </span>
-<span id="L2074" class="LineNr">2074 </span><span class="muRecipe">after</span> <span class="Constant"><a href='003-shortcuts.mu.html#L1857'>&lt;delete-to-start-of-line-begin&gt;</a></span> [
+<span id="L2074" class="LineNr">2074 </span><span class="muRecipe">after</span> <span class="Constant"><a href='003-shortcuts.mu.html#L1898'>&lt;delete-to-start-of-line-begin&gt;</a></span> [
 <span id="L2075" class="LineNr">2075 </span>  top-before:&amp;:<a href='../065duplex_list.mu.html#L3'>duplex-list</a>:char <span class="Special">&lt;-</span> get *editor, <span class="Constant">top-of-screen:offset</span>
 <span id="L2076" class="LineNr">2076 </span>]
-<span id="L2077" class="LineNr">2077 </span><span class="muRecipe">before</span> <span class="Constant"><a href='003-shortcuts.mu.html#L1859'>&lt;delete-to-start-of-line-end&gt;</a></span> [
+<span id="L2077" class="LineNr">2077 </span><span class="muRecipe">before</span> <span class="Constant"><a href='003-shortcuts.mu.html#L1900'>&lt;delete-to-start-of-line-end&gt;</a></span> [
 <span id="L2078" class="LineNr">2078 </span>  <span class="Delimiter">{</span>
 <span id="L2079" class="LineNr">2079 </span>  <span class="Conceal">¦</span> <span class="muControl">break-unless</span> deleted-cells  <span class="Comment"># delete failed; don't add an undo operation</span>
 <span id="L2080" class="LineNr">2080 </span>  <span class="Conceal">¦</span> top-after:&amp;:<a href='../065duplex_list.mu.html#L3'>duplex-list</a>:char <span class="Special">&lt;-</span> get *editor, <span class="Constant">top-of-screen:offset</span>
@@ -2157,14 +2157,14 @@ if ('onhashchange' in window) {
 <span id="L2094" class="LineNr">2094 </span>  <span class="Comment"># create an editor</span>
 <span id="L2095" class="LineNr">2095 </span>  assume-screen <span class="Constant">10/width</span>, <span class="Constant">5/height</span>
 <span id="L2096" class="LineNr">2096 </span>  e:&amp;:editor <span class="Special">&lt;-</span> <a href='001-editor.mu.html#L51'>new-editor</a> <span class="Constant">[]</span>, <span class="Constant">0/left</span>, <span class="Constant">10/right</span>
-<span id="L2097" class="LineNr">2097 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L4'>screen</a>, e
+<span id="L2097" class="LineNr">2097 </span>  <a href='002-typing.mu.html#L265'>editor-render</a> <a href='../081print.mu.html#L16'>screen</a>, e
 <span id="L2098" class="LineNr">2098 </span>  <span class="Comment"># insert some text and hit delete and backspace a few times</span>
 <span id="L2099" class="LineNr">2099 </span>  assume-console [
 <span id="L2100" class="LineNr">2100 </span>  <span class="Conceal">¦</span> type <span class="Constant">[abc]</span>
 <span id="L2101" class="LineNr">2101 </span>  <span class="Conceal">¦</span> press ctrl-u
 <span id="L2102" class="LineNr">2102 </span>  <span class="Conceal">¦</span> press ctrl-z
 <span id="L2103" class="LineNr">2103 </span>  ]
-<span id="L2104" class="LineNr">2104 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L4'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
+<span id="L2104" class="LineNr">2104 </span>  <a href='002-typing.mu.html#L16'>editor-event-loop</a> <a href='../081print.mu.html#L16'>screen</a>, <a href='../084console.mu.html#L23'>console</a>, e
 <span id="L2105" class="LineNr">2105 </span>  screen-should-contain [
 <span id="L2106" class="LineNr">2106 </span>  <span class="Conceal">¦</span><span class="Constant"> .          .</span>
 <span id="L2107" class="LineNr">2107 </span>  <span class="Conceal">¦</span><span class="Constant"> .abc       .</span>