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authorKartik Agaram <vc@akkartik.com>2020-09-11 00:59:56 -0700
committerKartik Agaram <vc@akkartik.com>2020-09-11 00:59:56 -0700
commit91a5f3e10300fd84db26690095329592de0942d7 (patch)
tree892f8d2f339f834ff6a8269e1fe098750c99090d /html/405screen.mu.html
parent3a4be20aba860bb62db3271b8e157bcc807514b0 (diff)
downloadmu-91a5f3e10300fd84db26690095329592de0942d7.tar.gz
6774
Diffstat (limited to 'html/405screen.mu.html')
-rw-r--r--html/405screen.mu.html1352
1 files changed, 795 insertions, 557 deletions
diff --git a/html/405screen.mu.html b/html/405screen.mu.html
index 566792ce..e252bb0d 100644
--- a/html/405screen.mu.html
+++ b/html/405screen.mu.html
@@ -675,572 +675,810 @@ if ('onhashchange' in window) {
 <span id="L615" class="LineNr"> 615 </span>    <span class="PreProc">var</span> done?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='309stream.subx.html#L6'>stream-empty?</a> e-addr
 <span id="L616" class="LineNr"> 616 </span>    compare done?, <span class="Constant">0</span>
 <span id="L617" class="LineNr"> 617 </span>    <span class="PreProc">break-if-!=</span>
-<span id="L618" class="LineNr"> 618 </span>    <span class="PreProc">var</span> g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L309'>screen-grapheme-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
-<span id="L619" class="LineNr"> 619 </span>    <span class="PreProc">var</span> g2/<span class="Constant">ebx</span>: int <span class="SpecialChar">&lt;-</span> copy g
+<span id="L618" class="LineNr"> 618 </span>    <span class="PreProc">var</span> _g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L309'>screen-grapheme-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
+<span id="L619" class="LineNr"> 619 </span>    <span class="PreProc">var</span> g/<span class="Constant">ebx</span>: grapheme <span class="SpecialChar">&lt;-</span> copy _g
 <span id="L620" class="LineNr"> 620 </span>    <span class="PreProc">var</span> expected-grapheme/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='403unicode.mu.html#L160'>read-grapheme</a> e-addr
-<span id="L621" class="LineNr"> 621 </span>    <span class="PreProc">var</span> expected-grapheme2/<span class="Constant">eax</span>: int <span class="SpecialChar">&lt;-</span> copy expected-grapheme
-<span id="L622" class="LineNr"> 622 </span>    <span class="Comment"># compare graphemes</span>
-<span id="L623" class="LineNr"> 623 </span>    $check-screen-row-from:compare-graphemes: <span class="Delimiter">{</span>
-<span id="L624" class="LineNr"> 624 </span>      <span class="Comment"># if expected-grapheme is space, null grapheme is also ok</span>
-<span id="L625" class="LineNr"> 625 </span>      <span class="Delimiter">{</span>
-<span id="L626" class="LineNr"> 626 </span>        compare expected-grapheme2, <span class="Constant">0x20</span>
-<span id="L627" class="LineNr"> 627 </span>        <span class="PreProc">break-if-!=</span>
-<span id="L628" class="LineNr"> 628 </span>        compare g2, <span class="Constant">0</span>
-<span id="L629" class="LineNr"> 629 </span>        <span class="PreProc">break-if-=</span> $check-screen-row-from:compare-graphemes
-<span id="L630" class="LineNr"> 630 </span>      <span class="Delimiter">}</span>
-<span id="L631" class="LineNr"> 631 </span>      <a href='102test.subx.html#L23'>check-ints-equal</a> g2, expected-grapheme2, msg
-<span id="L632" class="LineNr"> 632 </span>    <span class="Delimiter">}</span>
-<span id="L633" class="LineNr"> 633 </span>    idx <span class="SpecialChar">&lt;-</span> increment
-<span id="L634" class="LineNr"> 634 </span>    <span class="PreProc">loop</span>
-<span id="L635" class="LineNr"> 635 </span>  <span class="Delimiter">}</span>
-<span id="L636" class="LineNr"> 636 </span><span class="Delimiter">}</span>
-<span id="L637" class="LineNr"> 637 </span>
-<span id="L638" class="LineNr"> 638 </span><span class="Comment"># various variants by screen-cell attribute; spaces in the 'expected' data should not match the attribute</span>
-<span id="L639" class="LineNr"> 639 </span>
-<span id="L640" class="LineNr"> 640 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L640'>check-screen-row-in-color</a></span> <a href='405screen.mu.html#L9'>screen</a>: (addr <a href='405screen.mu.html#L9'>screen</a>), fg: int, row-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
-<span id="L641" class="LineNr"> 641 </span>  <a href='405screen.mu.html#L644'>check-screen-row-in-color-from</a> <a href='405screen.mu.html#L9'>screen</a>, fg, row-idx, <span class="Constant">1</span>, expected, msg
-<span id="L642" class="LineNr"> 642 </span><span class="Delimiter">}</span>
-<span id="L643" class="LineNr"> 643 </span>
-<span id="L644" class="LineNr"> 644 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L644'>check-screen-row-in-color-from</a></span> screen-on-stack: (addr <a href='405screen.mu.html#L9'>screen</a>), fg: int, row-idx: int, col-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
-<span id="L645" class="LineNr"> 645 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> copy screen-on-stack
-<span id="L646" class="LineNr"> 646 </span>  <span class="PreProc">var</span> idx/<span class="Constant">ecx</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L281'>screen-cell-index</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, col-idx
-<span id="L647" class="LineNr"> 647 </span>  <span class="Comment"># compare 'expected' with the screen contents starting at 'idx', grapheme by grapheme</span>
-<span id="L648" class="LineNr"> 648 </span>  <span class="PreProc">var</span> e: (stream byte <span class="Constant">0x100</span>)
-<span id="L649" class="LineNr"> 649 </span>  <span class="PreProc">var</span> e-addr/<span class="Constant">edx</span>: (addr stream byte) <span class="SpecialChar">&lt;-</span> address e
-<span id="L650" class="LineNr"> 650 </span>  <a href='108write.subx.html#L24'>write</a> e-addr, expected
-<span id="L651" class="LineNr"> 651 </span>  <span class="Delimiter">{</span>
-<span id="L652" class="LineNr"> 652 </span>    <span class="PreProc">var</span> done?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='309stream.subx.html#L6'>stream-empty?</a> e-addr
-<span id="L653" class="LineNr"> 653 </span>    compare done?, <span class="Constant">0</span>
-<span id="L654" class="LineNr"> 654 </span>    <span class="PreProc">break-if-!=</span>
-<span id="L655" class="LineNr"> 655 </span>    <span class="PreProc">var</span> g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L309'>screen-grapheme-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
-<span id="L656" class="LineNr"> 656 </span>    <span class="PreProc">var</span> g2/<span class="Constant">ebx</span>: int <span class="SpecialChar">&lt;-</span> copy g
-<span id="L657" class="LineNr"> 657 </span>    <span class="PreProc">var</span> expected-grapheme/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='403unicode.mu.html#L160'>read-grapheme</a> e-addr
-<span id="L658" class="LineNr"> 658 </span>    <span class="PreProc">var</span> expected-grapheme2/<span class="Constant">edx</span>: int <span class="SpecialChar">&lt;-</span> copy expected-grapheme
-<span id="L659" class="LineNr"> 659 </span>    <span class="Comment"># compare graphemes</span>
-<span id="L660" class="LineNr"> 660 </span>    $check-screen-row-in-color-from:compare-graphemes: <span class="Delimiter">{</span>
-<span id="L661" class="LineNr"> 661 </span>      <span class="Comment"># if expected-grapheme is space, null grapheme is also ok</span>
-<span id="L662" class="LineNr"> 662 </span>      <span class="Delimiter">{</span>
-<span id="L663" class="LineNr"> 663 </span>        compare expected-grapheme2, <span class="Constant">0x20</span>
-<span id="L664" class="LineNr"> 664 </span>        <span class="PreProc">break-if-!=</span>
-<span id="L665" class="LineNr"> 665 </span>        compare g2, <span class="Constant">0</span>
-<span id="L666" class="LineNr"> 666 </span>        <span class="PreProc">break-if-=</span> $check-screen-row-in-color-from:compare-graphemes
-<span id="L667" class="LineNr"> 667 </span>      <span class="Delimiter">}</span>
-<span id="L668" class="LineNr"> 668 </span>      <span class="Comment"># if expected-grapheme is space, a different color is ok</span>
-<span id="L669" class="LineNr"> 669 </span>      <span class="Delimiter">{</span>
-<span id="L670" class="LineNr"> 670 </span>        compare expected-grapheme2, <span class="Constant">0x20</span>
-<span id="L671" class="LineNr"> 671 </span>        <span class="PreProc">break-if-!=</span>
-<span id="L672" class="LineNr"> 672 </span>        <span class="PreProc">var</span> color/<span class="Constant">eax</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L326'>screen-color-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
-<span id="L673" class="LineNr"> 673 </span>        compare color, fg
-<span id="L674" class="LineNr"> 674 </span>        <span class="PreProc">break-if-!=</span> $check-screen-row-in-color-from:compare-graphemes
-<span id="L675" class="LineNr"> 675 </span>      <span class="Delimiter">}</span>
-<span id="L676" class="LineNr"> 676 </span>      <a href='102test.subx.html#L23'>check-ints-equal</a> g2, expected-grapheme2, msg
-<span id="L677" class="LineNr"> 677 </span>      <span class="PreProc">var</span> color/<span class="Constant">eax</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L326'>screen-color-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
-<span id="L678" class="LineNr"> 678 </span>      <a href='102test.subx.html#L23'>check-ints-equal</a> color, fg, msg
-<span id="L679" class="LineNr"> 679 </span>    <span class="Delimiter">}</span>
-<span id="L680" class="LineNr"> 680 </span>    idx <span class="SpecialChar">&lt;-</span> increment
-<span id="L681" class="LineNr"> 681 </span>    <span class="PreProc">loop</span>
-<span id="L682" class="LineNr"> 682 </span>  <span class="Delimiter">}</span>
-<span id="L683" class="LineNr"> 683 </span><span class="Delimiter">}</span>
-<span id="L684" class="LineNr"> 684 </span>
-<span id="L685" class="LineNr"> 685 </span><span class="Comment"># background color is visible even for spaces, so 'expected' behaves as an array of booleans.</span>
-<span id="L686" class="LineNr"> 686 </span><span class="Comment"># non-space = given background must match; space = background must not match</span>
-<span id="L687" class="LineNr"> 687 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L687'>check-screen-row-in-background-color</a></span> <a href='405screen.mu.html#L9'>screen</a>: (addr <a href='405screen.mu.html#L9'>screen</a>), bg: int, row-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
-<span id="L688" class="LineNr"> 688 </span>  <a href='405screen.mu.html#L691'>check-screen-row-in-background-color-from</a> <a href='405screen.mu.html#L9'>screen</a>, bg, row-idx, <span class="Constant">1</span>, expected, msg
-<span id="L689" class="LineNr"> 689 </span><span class="Delimiter">}</span>
-<span id="L690" class="LineNr"> 690 </span>
-<span id="L691" class="LineNr"> 691 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L691'>check-screen-row-in-background-color-from</a></span> screen-on-stack: (addr <a href='405screen.mu.html#L9'>screen</a>), bg: int, row-idx: int, col-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
-<span id="L692" class="LineNr"> 692 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> copy screen-on-stack
-<span id="L693" class="LineNr"> 693 </span>  <span class="PreProc">var</span> idx/<span class="Constant">ecx</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L281'>screen-cell-index</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, col-idx
-<span id="L694" class="LineNr"> 694 </span>  <span class="Comment"># compare 'expected' with the screen contents starting at 'idx', grapheme by grapheme</span>
-<span id="L695" class="LineNr"> 695 </span>  <span class="PreProc">var</span> e: (stream byte <span class="Constant">0x100</span>)
-<span id="L696" class="LineNr"> 696 </span>  <span class="PreProc">var</span> e-addr/<span class="Constant">edx</span>: (addr stream byte) <span class="SpecialChar">&lt;-</span> address e
-<span id="L697" class="LineNr"> 697 </span>  <a href='108write.subx.html#L24'>write</a> e-addr, expected
-<span id="L698" class="LineNr"> 698 </span>  <span class="Delimiter">{</span>
-<span id="L699" class="LineNr"> 699 </span>    <span class="PreProc">var</span> done?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='309stream.subx.html#L6'>stream-empty?</a> e-addr
-<span id="L700" class="LineNr"> 700 </span>    compare done?, <span class="Constant">0</span>
-<span id="L701" class="LineNr"> 701 </span>    <span class="PreProc">break-if-!=</span>
-<span id="L702" class="LineNr"> 702 </span>    <span class="PreProc">var</span> g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L309'>screen-grapheme-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
-<span id="L703" class="LineNr"> 703 </span>    <span class="PreProc">var</span> g2/<span class="Constant">ebx</span>: int <span class="SpecialChar">&lt;-</span> copy g
-<span id="L704" class="LineNr"> 704 </span>    <span class="PreProc">var</span> expected-grapheme/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='403unicode.mu.html#L160'>read-grapheme</a> e-addr
-<span id="L705" class="LineNr"> 705 </span>    <span class="PreProc">var</span> expected-grapheme2/<span class="Constant">edx</span>: int <span class="SpecialChar">&lt;-</span> copy expected-grapheme
-<span id="L706" class="LineNr"> 706 </span>    <span class="Comment"># compare graphemes</span>
-<span id="L707" class="LineNr"> 707 </span>    $check-screen-row-in-background-color-from:compare-graphemes: <span class="Delimiter">{</span>
-<span id="L708" class="LineNr"> 708 </span>      <span class="Comment"># if expected-grapheme is space, null grapheme is also ok</span>
-<span id="L709" class="LineNr"> 709 </span>      <span class="Delimiter">{</span>
-<span id="L710" class="LineNr"> 710 </span>        compare expected-grapheme2, <span class="Constant">0x20</span>
-<span id="L711" class="LineNr"> 711 </span>        <span class="PreProc">break-if-!=</span>
-<span id="L712" class="LineNr"> 712 </span>        compare g2, <span class="Constant">0</span>
-<span id="L713" class="LineNr"> 713 </span>        <span class="PreProc">break-if-=</span> $check-screen-row-in-background-color-from:compare-graphemes
-<span id="L714" class="LineNr"> 714 </span>      <span class="Delimiter">}</span>
-<span id="L715" class="LineNr"> 715 </span>      <span class="Comment"># if expected-grapheme is space, a different color is ok</span>
-<span id="L716" class="LineNr"> 716 </span>      <span class="Delimiter">{</span>
-<span id="L717" class="LineNr"> 717 </span>        compare expected-grapheme2, <span class="Constant">0x20</span>
-<span id="L718" class="LineNr"> 718 </span>        <span class="PreProc">break-if-!=</span>
-<span id="L719" class="LineNr"> 719 </span>        <span class="PreProc">var</span> color/<span class="Constant">eax</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L343'>screen-background-color-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
-<span id="L720" class="LineNr"> 720 </span>        compare color, bg
-<span id="L721" class="LineNr"> 721 </span>        <span class="PreProc">break-if-!=</span> $check-screen-row-in-background-color-from:compare-graphemes
-<span id="L722" class="LineNr"> 722 </span>      <span class="Delimiter">}</span>
-<span id="L723" class="LineNr"> 723 </span>      <a href='102test.subx.html#L23'>check-ints-equal</a> g2, expected-grapheme2, msg
-<span id="L724" class="LineNr"> 724 </span>      <span class="PreProc">var</span> color/<span class="Constant">eax</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L343'>screen-background-color-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
-<span id="L725" class="LineNr"> 725 </span>      <a href='102test.subx.html#L23'>check-ints-equal</a> color, bg, msg
-<span id="L726" class="LineNr"> 726 </span>    <span class="Delimiter">}</span>
-<span id="L727" class="LineNr"> 727 </span>    idx <span class="SpecialChar">&lt;-</span> increment
-<span id="L728" class="LineNr"> 728 </span>    <span class="PreProc">loop</span>
-<span id="L729" class="LineNr"> 729 </span>  <span class="Delimiter">}</span>
-<span id="L730" class="LineNr"> 730 </span><span class="Delimiter">}</span>
-<span id="L731" class="LineNr"> 731 </span>
-<span id="L732" class="LineNr"> 732 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L732'>check-screen-row-in-bold</a></span> <a href='405screen.mu.html#L9'>screen</a>: (addr <a href='405screen.mu.html#L9'>screen</a>), row-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
-<span id="L733" class="LineNr"> 733 </span>  <a href='405screen.mu.html#L736'>check-screen-row-in-bold-from</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, <span class="Constant">1</span>, expected, msg
-<span id="L734" class="LineNr"> 734 </span><span class="Delimiter">}</span>
-<span id="L735" class="LineNr"> 735 </span>
-<span id="L736" class="LineNr"> 736 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L736'>check-screen-row-in-bold-from</a></span> screen-on-stack: (addr <a href='405screen.mu.html#L9'>screen</a>), row-idx: int, col-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
-<span id="L737" class="LineNr"> 737 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> copy screen-on-stack
-<span id="L738" class="LineNr"> 738 </span>  <span class="PreProc">var</span> idx/<span class="Constant">ecx</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L281'>screen-cell-index</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, col-idx
-<span id="L739" class="LineNr"> 739 </span>  <span class="Comment"># compare 'expected' with the screen contents starting at 'idx', grapheme by grapheme</span>
-<span id="L740" class="LineNr"> 740 </span>  <span class="PreProc">var</span> e: (stream byte <span class="Constant">0x100</span>)
-<span id="L741" class="LineNr"> 741 </span>  <span class="PreProc">var</span> e-addr/<span class="Constant">edx</span>: (addr stream byte) <span class="SpecialChar">&lt;-</span> address e
-<span id="L742" class="LineNr"> 742 </span>  <a href='108write.subx.html#L24'>write</a> e-addr, expected
-<span id="L743" class="LineNr"> 743 </span>  <span class="Delimiter">{</span>
-<span id="L744" class="LineNr"> 744 </span>    <span class="PreProc">var</span> done?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='309stream.subx.html#L6'>stream-empty?</a> e-addr
-<span id="L745" class="LineNr"> 745 </span>    compare done?, <span class="Constant">0</span>
-<span id="L746" class="LineNr"> 746 </span>    <span class="PreProc">break-if-!=</span>
-<span id="L747" class="LineNr"> 747 </span>    <span class="PreProc">var</span> g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L309'>screen-grapheme-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
-<span id="L748" class="LineNr"> 748 </span>    <span class="PreProc">var</span> g2/<span class="Constant">ebx</span>: int <span class="SpecialChar">&lt;-</span> copy g
-<span id="L749" class="LineNr"> 749 </span>    <span class="PreProc">var</span> expected-grapheme/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='403unicode.mu.html#L160'>read-grapheme</a> e-addr
-<span id="L750" class="LineNr"> 750 </span>    <span class="PreProc">var</span> expected-grapheme2/<span class="Constant">edx</span>: int <span class="SpecialChar">&lt;-</span> copy expected-grapheme
-<span id="L751" class="LineNr"> 751 </span>    <span class="Comment"># compare graphemes</span>
-<span id="L752" class="LineNr"> 752 </span>    $check-screen-row-in-bold-from:compare-graphemes: <span class="Delimiter">{</span>
-<span id="L753" class="LineNr"> 753 </span>      <span class="Comment"># if expected-grapheme is space, null grapheme is also ok</span>
-<span id="L754" class="LineNr"> 754 </span>      <span class="Delimiter">{</span>
-<span id="L755" class="LineNr"> 755 </span>        compare expected-grapheme2, <span class="Constant">0x20</span>
-<span id="L756" class="LineNr"> 756 </span>        <span class="PreProc">break-if-!=</span>
-<span id="L757" class="LineNr"> 757 </span>        compare g2, <span class="Constant">0</span>
-<span id="L758" class="LineNr"> 758 </span>        <span class="PreProc">break-if-=</span> $check-screen-row-in-bold-from:compare-graphemes
-<span id="L759" class="LineNr"> 759 </span>      <span class="Delimiter">}</span>
-<span id="L760" class="LineNr"> 760 </span>      <span class="Comment"># if expected-grapheme is space, non-bold is ok</span>
-<span id="L761" class="LineNr"> 761 </span>      <span class="Delimiter">{</span>
-<span id="L762" class="LineNr"> 762 </span>        compare expected-grapheme2, <span class="Constant">0x20</span>
-<span id="L763" class="LineNr"> 763 </span>        <span class="PreProc">break-if-!=</span>
-<span id="L764" class="LineNr"> 764 </span>        <span class="PreProc">var</span> bold?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L360'>screen-bold-at-idx?</a> <a href='405screen.mu.html#L9'>screen</a>, idx
-<span id="L765" class="LineNr"> 765 </span>        compare bold?, <span class="Constant">1</span>
-<span id="L766" class="LineNr"> 766 </span>        <span class="PreProc">break-if-!=</span> $check-screen-row-in-bold-from:compare-graphemes
-<span id="L767" class="LineNr"> 767 </span>      <span class="Delimiter">}</span>
-<span id="L768" class="LineNr"> 768 </span>      <a href='102test.subx.html#L23'>check-ints-equal</a> g2, expected-grapheme2, msg
-<span id="L769" class="LineNr"> 769 </span>      <span class="PreProc">var</span> bold?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L360'>screen-bold-at-idx?</a> <a href='405screen.mu.html#L9'>screen</a>, idx
-<span id="L770" class="LineNr"> 770 </span>      <span class="PreProc">var</span> bold/<span class="Constant">eax</span>: int <span class="SpecialChar">&lt;-</span> copy bold?
-<span id="L771" class="LineNr"> 771 </span>      <a href='102test.subx.html#L23'>check-ints-equal</a> bold, <span class="Constant">1</span>, msg
-<span id="L772" class="LineNr"> 772 </span>    <span class="Delimiter">}</span>
-<span id="L773" class="LineNr"> 773 </span>    idx <span class="SpecialChar">&lt;-</span> increment
-<span id="L774" class="LineNr"> 774 </span>    <span class="PreProc">loop</span>
-<span id="L775" class="LineNr"> 775 </span>  <span class="Delimiter">}</span>
-<span id="L776" class="LineNr"> 776 </span><span class="Delimiter">}</span>
-<span id="L777" class="LineNr"> 777 </span>
-<span id="L778" class="LineNr"> 778 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L778'>check-screen-row-in-underline</a></span> <a href='405screen.mu.html#L9'>screen</a>: (addr <a href='405screen.mu.html#L9'>screen</a>), row-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
-<span id="L779" class="LineNr"> 779 </span>  <a href='405screen.mu.html#L782'>check-screen-row-in-underline-from</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, <span class="Constant">1</span>, expected, msg
-<span id="L780" class="LineNr"> 780 </span><span class="Delimiter">}</span>
-<span id="L781" class="LineNr"> 781 </span>
-<span id="L782" class="LineNr"> 782 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L782'>check-screen-row-in-underline-from</a></span> screen-on-stack: (addr <a href='405screen.mu.html#L9'>screen</a>), row-idx: int, col-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
-<span id="L783" class="LineNr"> 783 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> copy screen-on-stack
-<span id="L784" class="LineNr"> 784 </span>  <span class="PreProc">var</span> idx/<span class="Constant">ecx</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L281'>screen-cell-index</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, col-idx
-<span id="L785" class="LineNr"> 785 </span>  <span class="Comment"># compare 'expected' with the screen contents starting at 'idx', grapheme by grapheme</span>
-<span id="L786" class="LineNr"> 786 </span>  <span class="PreProc">var</span> e: (stream byte <span class="Constant">0x100</span>)
-<span id="L787" class="LineNr"> 787 </span>  <span class="PreProc">var</span> e-addr/<span class="Constant">edx</span>: (addr stream byte) <span class="SpecialChar">&lt;-</span> address e
-<span id="L788" class="LineNr"> 788 </span>  <a href='108write.subx.html#L24'>write</a> e-addr, expected
-<span id="L789" class="LineNr"> 789 </span>  <span class="Delimiter">{</span>
-<span id="L790" class="LineNr"> 790 </span>    <span class="PreProc">var</span> done?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='309stream.subx.html#L6'>stream-empty?</a> e-addr
-<span id="L791" class="LineNr"> 791 </span>    compare done?, <span class="Constant">0</span>
-<span id="L792" class="LineNr"> 792 </span>    <span class="PreProc">break-if-!=</span>
-<span id="L793" class="LineNr"> 793 </span>    <span class="PreProc">var</span> g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L309'>screen-grapheme-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
-<span id="L794" class="LineNr"> 794 </span>    <span class="PreProc">var</span> g2/<span class="Constant">ebx</span>: int <span class="SpecialChar">&lt;-</span> copy g
-<span id="L795" class="LineNr"> 795 </span>    <span class="PreProc">var</span> expected-grapheme/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='403unicode.mu.html#L160'>read-grapheme</a> e-addr
-<span id="L796" class="LineNr"> 796 </span>    <span class="PreProc">var</span> expected-grapheme2/<span class="Constant">edx</span>: int <span class="SpecialChar">&lt;-</span> copy expected-grapheme
-<span id="L797" class="LineNr"> 797 </span>    <span class="Comment"># compare graphemes</span>
-<span id="L798" class="LineNr"> 798 </span>    $check-screen-row-in-underline-from:compare-graphemes: <span class="Delimiter">{</span>
-<span id="L799" class="LineNr"> 799 </span>      <span class="Comment"># if expected-grapheme is space, null grapheme is also ok</span>
-<span id="L800" class="LineNr"> 800 </span>      <span class="Delimiter">{</span>
-<span id="L801" class="LineNr"> 801 </span>        compare expected-grapheme2, <span class="Constant">0x20</span>
-<span id="L802" class="LineNr"> 802 </span>        <span class="PreProc">break-if-!=</span>
-<span id="L803" class="LineNr"> 803 </span>        compare g2, <span class="Constant">0</span>
-<span id="L804" class="LineNr"> 804 </span>        <span class="PreProc">break-if-=</span> $check-screen-row-in-underline-from:compare-graphemes
-<span id="L805" class="LineNr"> 805 </span>      <span class="Delimiter">}</span>
-<span id="L806" class="LineNr"> 806 </span>      <span class="Comment"># if expected-grapheme is space, non-underline is ok</span>
-<span id="L807" class="LineNr"> 807 </span>      <span class="Delimiter">{</span>
-<span id="L808" class="LineNr"> 808 </span>        compare expected-grapheme2, <span class="Constant">0x20</span>
-<span id="L809" class="LineNr"> 809 </span>        <span class="PreProc">break-if-!=</span>
-<span id="L810" class="LineNr"> 810 </span>        <span class="PreProc">var</span> underline?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L377'>screen-underline-at-idx?</a> <a href='405screen.mu.html#L9'>screen</a>, idx
-<span id="L811" class="LineNr"> 811 </span>        compare underline?, <span class="Constant">1</span>
-<span id="L812" class="LineNr"> 812 </span>        <span class="PreProc">break-if-!=</span> $check-screen-row-in-underline-from:compare-graphemes
-<span id="L813" class="LineNr"> 813 </span>      <span class="Delimiter">}</span>
-<span id="L814" class="LineNr"> 814 </span>      <a href='102test.subx.html#L23'>check-ints-equal</a> g2, expected-grapheme2, msg
-<span id="L815" class="LineNr"> 815 </span>      <span class="PreProc">var</span> underline?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L377'>screen-underline-at-idx?</a> <a href='405screen.mu.html#L9'>screen</a>, idx
-<span id="L816" class="LineNr"> 816 </span>      <span class="PreProc">var</span> underline/<span class="Constant">eax</span>: int <span class="SpecialChar">&lt;-</span> copy underline?
-<span id="L817" class="LineNr"> 817 </span>      <a href='102test.subx.html#L23'>check-ints-equal</a> underline, <span class="Constant">1</span>, msg
-<span id="L818" class="LineNr"> 818 </span>    <span class="Delimiter">}</span>
-<span id="L819" class="LineNr"> 819 </span>    idx <span class="SpecialChar">&lt;-</span> increment
-<span id="L820" class="LineNr"> 820 </span>    <span class="PreProc">loop</span>
-<span id="L821" class="LineNr"> 821 </span>  <span class="Delimiter">}</span>
-<span id="L822" class="LineNr"> 822 </span><span class="Delimiter">}</span>
-<span id="L823" class="LineNr"> 823 </span>
-<span id="L824" class="LineNr"> 824 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L824'>check-screen-row-in-reverse</a></span> <a href='405screen.mu.html#L9'>screen</a>: (addr <a href='405screen.mu.html#L9'>screen</a>), row-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
-<span id="L825" class="LineNr"> 825 </span>  <a href='405screen.mu.html#L828'>check-screen-row-in-reverse-from</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, <span class="Constant">1</span>, expected, msg
-<span id="L826" class="LineNr"> 826 </span><span class="Delimiter">}</span>
-<span id="L827" class="LineNr"> 827 </span>
-<span id="L828" class="LineNr"> 828 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L828'>check-screen-row-in-reverse-from</a></span> screen-on-stack: (addr <a href='405screen.mu.html#L9'>screen</a>), row-idx: int, col-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
-<span id="L829" class="LineNr"> 829 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> copy screen-on-stack
-<span id="L830" class="LineNr"> 830 </span>  <span class="PreProc">var</span> idx/<span class="Constant">ecx</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L281'>screen-cell-index</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, col-idx
-<span id="L831" class="LineNr"> 831 </span>  <span class="Comment"># compare 'expected' with the screen contents starting at 'idx', grapheme by grapheme</span>
-<span id="L832" class="LineNr"> 832 </span>  <span class="PreProc">var</span> e: (stream byte <span class="Constant">0x100</span>)
-<span id="L833" class="LineNr"> 833 </span>  <span class="PreProc">var</span> e-addr/<span class="Constant">edx</span>: (addr stream byte) <span class="SpecialChar">&lt;-</span> address e
-<span id="L834" class="LineNr"> 834 </span>  <a href='108write.subx.html#L24'>write</a> e-addr, expected
-<span id="L835" class="LineNr"> 835 </span>  <span class="Delimiter">{</span>
-<span id="L836" class="LineNr"> 836 </span>    <span class="PreProc">var</span> done?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='309stream.subx.html#L6'>stream-empty?</a> e-addr
-<span id="L837" class="LineNr"> 837 </span>    compare done?, <span class="Constant">0</span>
-<span id="L838" class="LineNr"> 838 </span>    <span class="PreProc">break-if-!=</span>
-<span id="L839" class="LineNr"> 839 </span>    <span class="PreProc">var</span> g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L309'>screen-grapheme-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
-<span id="L840" class="LineNr"> 840 </span>    <span class="PreProc">var</span> g2/<span class="Constant">ebx</span>: int <span class="SpecialChar">&lt;-</span> copy g
-<span id="L841" class="LineNr"> 841 </span>    <span class="PreProc">var</span> expected-grapheme/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='403unicode.mu.html#L160'>read-grapheme</a> e-addr
-<span id="L842" class="LineNr"> 842 </span>    <span class="PreProc">var</span> expected-grapheme2/<span class="Constant">edx</span>: int <span class="SpecialChar">&lt;-</span> copy expected-grapheme
-<span id="L843" class="LineNr"> 843 </span>    <span class="Comment"># compare graphemes</span>
-<span id="L844" class="LineNr"> 844 </span>    $check-screen-row-in-reverse-from:compare-graphemes: <span class="Delimiter">{</span>
-<span id="L845" class="LineNr"> 845 </span>      <span class="Comment"># if expected-grapheme is space, null grapheme is also ok</span>
-<span id="L846" class="LineNr"> 846 </span>      <span class="Delimiter">{</span>
-<span id="L847" class="LineNr"> 847 </span>        compare expected-grapheme2, <span class="Constant">0x20</span>
-<span id="L848" class="LineNr"> 848 </span>        <span class="PreProc">break-if-!=</span>
-<span id="L849" class="LineNr"> 849 </span>        compare g2, <span class="Constant">0</span>
-<span id="L850" class="LineNr"> 850 </span>        <span class="PreProc">break-if-=</span> $check-screen-row-in-reverse-from:compare-graphemes
-<span id="L851" class="LineNr"> 851 </span>      <span class="Delimiter">}</span>
-<span id="L852" class="LineNr"> 852 </span>      <span class="Comment"># if expected-grapheme is space, non-reverse is ok</span>
-<span id="L853" class="LineNr"> 853 </span>      <span class="Delimiter">{</span>
-<span id="L854" class="LineNr"> 854 </span>        compare expected-grapheme2, <span class="Constant">0x20</span>
-<span id="L855" class="LineNr"> 855 </span>        <span class="PreProc">break-if-!=</span>
-<span id="L856" class="LineNr"> 856 </span>        <span class="PreProc">var</span> reverse?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L394'>screen-reverse-at-idx?</a> <a href='405screen.mu.html#L9'>screen</a>, idx
-<span id="L857" class="LineNr"> 857 </span>        compare reverse?, <span class="Constant">1</span>
-<span id="L858" class="LineNr"> 858 </span>        <span class="PreProc">break-if-!=</span> $check-screen-row-in-reverse-from:compare-graphemes
-<span id="L859" class="LineNr"> 859 </span>      <span class="Delimiter">}</span>
-<span id="L860" class="LineNr"> 860 </span>      <a href='102test.subx.html#L23'>check-ints-equal</a> g2, expected-grapheme2, msg
-<span id="L861" class="LineNr"> 861 </span>      <span class="PreProc">var</span> reverse?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L394'>screen-reverse-at-idx?</a> <a href='405screen.mu.html#L9'>screen</a>, idx
-<span id="L862" class="LineNr"> 862 </span>      <span class="PreProc">var</span> reverse/<span class="Constant">eax</span>: int <span class="SpecialChar">&lt;-</span> copy reverse?
-<span id="L863" class="LineNr"> 863 </span>      <a href='102test.subx.html#L23'>check-ints-equal</a> reverse, <span class="Constant">1</span>, msg
-<span id="L864" class="LineNr"> 864 </span>    <span class="Delimiter">}</span>
-<span id="L865" class="LineNr"> 865 </span>    idx <span class="SpecialChar">&lt;-</span> increment
-<span id="L866" class="LineNr"> 866 </span>    <span class="PreProc">loop</span>
-<span id="L867" class="LineNr"> 867 </span>  <span class="Delimiter">}</span>
-<span id="L868" class="LineNr"> 868 </span><span class="Delimiter">}</span>
-<span id="L869" class="LineNr"> 869 </span>
-<span id="L870" class="LineNr"> 870 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L870'>check-screen-row-in-blinking</a></span> <a href='405screen.mu.html#L9'>screen</a>: (addr <a href='405screen.mu.html#L9'>screen</a>), row-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
-<span id="L871" class="LineNr"> 871 </span>  <a href='405screen.mu.html#L874'>check-screen-row-in-blinking-from</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, <span class="Constant">1</span>, expected, msg
-<span id="L872" class="LineNr"> 872 </span><span class="Delimiter">}</span>
-<span id="L873" class="LineNr"> 873 </span>
-<span id="L874" class="LineNr"> 874 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L874'>check-screen-row-in-blinking-from</a></span> screen-on-stack: (addr <a href='405screen.mu.html#L9'>screen</a>), row-idx: int, col-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
-<span id="L875" class="LineNr"> 875 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> copy screen-on-stack
-<span id="L876" class="LineNr"> 876 </span>  <span class="PreProc">var</span> idx/<span class="Constant">ecx</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L281'>screen-cell-index</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, col-idx
-<span id="L877" class="LineNr"> 877 </span>  <span class="Comment"># compare 'expected' with the screen contents starting at 'idx', grapheme by grapheme</span>
-<span id="L878" class="LineNr"> 878 </span>  <span class="PreProc">var</span> e: (stream byte <span class="Constant">0x100</span>)
-<span id="L879" class="LineNr"> 879 </span>  <span class="PreProc">var</span> e-addr/<span class="Constant">edx</span>: (addr stream byte) <span class="SpecialChar">&lt;-</span> address e
-<span id="L880" class="LineNr"> 880 </span>  <a href='108write.subx.html#L24'>write</a> e-addr, expected
-<span id="L881" class="LineNr"> 881 </span>  <span class="Delimiter">{</span>
-<span id="L882" class="LineNr"> 882 </span>    <span class="PreProc">var</span> done?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='309stream.subx.html#L6'>stream-empty?</a> e-addr
-<span id="L883" class="LineNr"> 883 </span>    compare done?, <span class="Constant">0</span>
-<span id="L884" class="LineNr"> 884 </span>    <span class="PreProc">break-if-!=</span>
-<span id="L885" class="LineNr"> 885 </span>    <span class="PreProc">var</span> g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L309'>screen-grapheme-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
-<span id="L886" class="LineNr"> 886 </span>    <span class="PreProc">var</span> g2/<span class="Constant">ebx</span>: int <span class="SpecialChar">&lt;-</span> copy g
-<span id="L887" class="LineNr"> 887 </span>    <span class="PreProc">var</span> expected-grapheme/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='403unicode.mu.html#L160'>read-grapheme</a> e-addr
-<span id="L888" class="LineNr"> 888 </span>    <span class="PreProc">var</span> expected-grapheme2/<span class="Constant">edx</span>: int <span class="SpecialChar">&lt;-</span> copy expected-grapheme
-<span id="L889" class="LineNr"> 889 </span>    <span class="Comment"># compare graphemes</span>
-<span id="L890" class="LineNr"> 890 </span>    $check-screen-row-in-blinking-from:compare-graphemes: <span class="Delimiter">{</span>
-<span id="L891" class="LineNr"> 891 </span>      <span class="Comment"># if expected-grapheme is space, null grapheme is also ok</span>
-<span id="L892" class="LineNr"> 892 </span>      <span class="Delimiter">{</span>
-<span id="L893" class="LineNr"> 893 </span>        compare expected-grapheme2, <span class="Constant">0x20</span>
-<span id="L894" class="LineNr"> 894 </span>        <span class="PreProc">break-if-!=</span>
-<span id="L895" class="LineNr"> 895 </span>        compare g2, <span class="Constant">0</span>
-<span id="L896" class="LineNr"> 896 </span>        <span class="PreProc">break-if-=</span> $check-screen-row-in-blinking-from:compare-graphemes
-<span id="L897" class="LineNr"> 897 </span>      <span class="Delimiter">}</span>
-<span id="L898" class="LineNr"> 898 </span>      <span class="Comment"># if expected-grapheme is space, non-blinking is ok</span>
-<span id="L899" class="LineNr"> 899 </span>      <span class="Delimiter">{</span>
-<span id="L900" class="LineNr"> 900 </span>        compare expected-grapheme2, <span class="Constant">0x20</span>
-<span id="L901" class="LineNr"> 901 </span>        <span class="PreProc">break-if-!=</span>
-<span id="L902" class="LineNr"> 902 </span>        <span class="PreProc">var</span> blinking?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L411'>screen-blink-at-idx?</a> <a href='405screen.mu.html#L9'>screen</a>, idx
-<span id="L903" class="LineNr"> 903 </span>        compare blinking?, <span class="Constant">1</span>
-<span id="L904" class="LineNr"> 904 </span>        <span class="PreProc">break-if-!=</span> $check-screen-row-in-blinking-from:compare-graphemes
-<span id="L905" class="LineNr"> 905 </span>      <span class="Delimiter">}</span>
-<span id="L906" class="LineNr"> 906 </span>      <a href='102test.subx.html#L23'>check-ints-equal</a> g2, expected-grapheme2, msg
-<span id="L907" class="LineNr"> 907 </span>      <span class="PreProc">var</span> blinking?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L411'>screen-blink-at-idx?</a> <a href='405screen.mu.html#L9'>screen</a>, idx
-<span id="L908" class="LineNr"> 908 </span>      <span class="PreProc">var</span> blinking/<span class="Constant">eax</span>: int <span class="SpecialChar">&lt;-</span> copy blinking?
-<span id="L909" class="LineNr"> 909 </span>      <a href='102test.subx.html#L23'>check-ints-equal</a> blinking, <span class="Constant">1</span>, msg
-<span id="L910" class="LineNr"> 910 </span>    <span class="Delimiter">}</span>
-<span id="L911" class="LineNr"> 911 </span>    idx <span class="SpecialChar">&lt;-</span> increment
-<span id="L912" class="LineNr"> 912 </span>    <span class="PreProc">loop</span>
-<span id="L913" class="LineNr"> 913 </span>  <span class="Delimiter">}</span>
-<span id="L914" class="LineNr"> 914 </span><span class="Delimiter">}</span>
-<span id="L915" class="LineNr"> 915 </span>
-<span id="L916" class="LineNr"> 916 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L916'>test-print-single-grapheme</a></span> <span class="Delimiter">{</span>
-<span id="L917" class="LineNr"> 917 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L918" class="LineNr"> 918 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L919" class="LineNr"> 919 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
-<span id="L920" class="LineNr"> 920 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
-<span id="L921" class="LineNr"> 921 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L922" class="LineNr"> 922 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - test-print-single-grapheme&quot;</span>  <span class="Comment"># top-left corner of the screen</span>
-<span id="L923" class="LineNr"> 923 </span><span class="Delimiter">}</span>
-<span id="L924" class="LineNr"> 924 </span>
-<span id="L925" class="LineNr"> 925 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L925'>test-print-multiple-graphemes</a></span> <span class="Delimiter">{</span>
-<span id="L926" class="LineNr"> 926 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L927" class="LineNr"> 927 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L928" class="LineNr"> 928 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
-<span id="L929" class="LineNr"> 929 </span>  <a href='405screen.mu.html#L179'>print-string</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">&quot;Hello, 世界&quot;</span>
-<span id="L930" class="LineNr"> 930 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;Hello, 世界&quot;</span>, <span class="Constant">&quot;F - test-print-multiple-graphemes&quot;</span>
-<span id="L931" class="LineNr"> 931 </span><span class="Delimiter">}</span>
-<span id="L932" class="LineNr"> 932 </span>
-<span id="L933" class="LineNr"> 933 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L933'>test-move-cursor</a></span> <span class="Delimiter">{</span>
-<span id="L934" class="LineNr"> 934 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L935" class="LineNr"> 935 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L936" class="LineNr"> 936 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
-<span id="L937" class="LineNr"> 937 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">4</span>
-<span id="L938" class="LineNr"> 938 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
-<span id="L939" class="LineNr"> 939 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L940" class="LineNr"> 940 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;   a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor&quot;</span>  <span class="Comment"># top row</span>
-<span id="L941" class="LineNr"> 941 </span><span class="Delimiter">}</span>
-<span id="L942" class="LineNr"> 942 </span>
-<span id="L943" class="LineNr"> 943 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L943'>test-move-cursor-zeroes</a></span> <span class="Delimiter">{</span>
-<span id="L944" class="LineNr"> 944 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L945" class="LineNr"> 945 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L946" class="LineNr"> 946 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
-<span id="L947" class="LineNr"> 947 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">0</span>, <span class="Constant">0</span>
-<span id="L948" class="LineNr"> 948 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
-<span id="L949" class="LineNr"> 949 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L950" class="LineNr"> 950 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor-zeroes&quot;</span>  <span class="Comment"># top-left corner of the screen</span>
-<span id="L951" class="LineNr"> 951 </span><span class="Delimiter">}</span>
-<span id="L952" class="LineNr"> 952 </span>
-<span id="L953" class="LineNr"> 953 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L953'>test-move-cursor-zero-row</a></span> <span class="Delimiter">{</span>
-<span id="L954" class="LineNr"> 954 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L955" class="LineNr"> 955 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L956" class="LineNr"> 956 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
-<span id="L957" class="LineNr"> 957 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">0</span>, <span class="Constant">2</span>
-<span id="L958" class="LineNr"> 958 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
-<span id="L959" class="LineNr"> 959 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L960" class="LineNr"> 960 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot; a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor-zero-row&quot;</span>  <span class="Comment"># top row</span>
-<span id="L961" class="LineNr"> 961 </span><span class="Delimiter">}</span>
-<span id="L962" class="LineNr"> 962 </span>
-<span id="L963" class="LineNr"> 963 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L963'>test-move-cursor-zero-column</a></span> <span class="Delimiter">{</span>
-<span id="L964" class="LineNr"> 964 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L965" class="LineNr"> 965 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L966" class="LineNr"> 966 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
-<span id="L967" class="LineNr"> 967 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">4</span>, <span class="Constant">0</span>
-<span id="L968" class="LineNr"> 968 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
-<span id="L969" class="LineNr"> 969 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L970" class="LineNr"> 970 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">4</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor-zero-column&quot;</span>
-<span id="L971" class="LineNr"> 971 </span><span class="Delimiter">}</span>
-<span id="L972" class="LineNr"> 972 </span>
-<span id="L973" class="LineNr"> 973 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L973'>test-move-cursor-negative-row</a></span> <span class="Delimiter">{</span>
-<span id="L974" class="LineNr"> 974 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L975" class="LineNr"> 975 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L976" class="LineNr"> 976 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">3</span>
-<span id="L977" class="LineNr"> 977 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">-1</span>, <span class="Constant">2</span>  <span class="Comment"># row -1</span>
-<span id="L978" class="LineNr"> 978 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
-<span id="L979" class="LineNr"> 979 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L980" class="LineNr"> 980 </span>  <span class="Comment"># no move</span>
-<span id="L981" class="LineNr"> 981 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor-negative-row&quot;</span>
-<span id="L982" class="LineNr"> 982 </span><span class="Delimiter">}</span>
-<span id="L983" class="LineNr"> 983 </span>
-<span id="L984" class="LineNr"> 984 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L984'>test-move-cursor-negative-column</a></span> <span class="Delimiter">{</span>
-<span id="L985" class="LineNr"> 985 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L986" class="LineNr"> 986 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L987" class="LineNr"> 987 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">3</span>
-<span id="L988" class="LineNr"> 988 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">2</span>, <span class="Constant">-1</span>  <span class="Comment"># column -1</span>
-<span id="L989" class="LineNr"> 989 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
-<span id="L990" class="LineNr"> 990 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L991" class="LineNr"> 991 </span>  <span class="Comment"># no move</span>
-<span id="L992" class="LineNr"> 992 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor-negative-column&quot;</span>
+<span id="L621" class="LineNr"> 621 </span>    <span class="Comment"># compare graphemes</span>
+<span id="L622" class="LineNr"> 622 </span>    $check-screen-row-from:compare-graphemes: <span class="Delimiter">{</span>
+<span id="L623" class="LineNr"> 623 </span>      <span class="Comment"># if expected-grapheme is space, null grapheme is also ok</span>
+<span id="L624" class="LineNr"> 624 </span>      <span class="Delimiter">{</span>
+<span id="L625" class="LineNr"> 625 </span>        compare expected-grapheme, <span class="Constant">0x20</span>
+<span id="L626" class="LineNr"> 626 </span>        <span class="PreProc">break-if-!=</span>
+<span id="L627" class="LineNr"> 627 </span>        compare g, <span class="Constant">0</span>
+<span id="L628" class="LineNr"> 628 </span>        <span class="PreProc">break-if-=</span> $check-screen-row-from:compare-graphemes
+<span id="L629" class="LineNr"> 629 </span>      <span class="Delimiter">}</span>
+<span id="L630" class="LineNr"> 630 </span>      <span class="Comment"># if (g == expected-grapheme) print &quot;.&quot;</span>
+<span id="L631" class="LineNr"> 631 </span>      compare g, expected-grapheme
+<span id="L632" class="LineNr"> 632 </span>      <span class="Delimiter">{</span>
+<span id="L633" class="LineNr"> 633 </span>        <span class="PreProc">break-if-!=</span>
+<span id="L634" class="LineNr"> 634 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;.&quot;</span>
+<span id="L635" class="LineNr"> 635 </span>        <span class="PreProc">break</span> $check-screen-row-from:compare-graphemes
+<span id="L636" class="LineNr"> 636 </span>      <span class="Delimiter">}</span>
+<span id="L637" class="LineNr"> 637 </span>      <span class="Comment"># otherwise print an error</span>
+<span id="L638" class="LineNr"> 638 </span>      <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> msg
+<span id="L639" class="LineNr"> 639 </span>      <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;: expected '&quot;</span>
+<span id="L640" class="LineNr"> 640 </span>      <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> expected-grapheme
+<span id="L641" class="LineNr"> 641 </span>      <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;' at (&quot;</span>
+<span id="L642" class="LineNr"> 642 </span>      <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> row-idx
+<span id="L643" class="LineNr"> 643 </span>      <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;, &quot;</span>
+<span id="L644" class="LineNr"> 644 </span>      <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> col-idx
+<span id="L645" class="LineNr"> 645 </span>      <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;) but observed '&quot;</span>
+<span id="L646" class="LineNr"> 646 </span>      <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> g
+<span id="L647" class="LineNr"> 647 </span>      <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;'\n&quot;</span>
+<span id="L648" class="LineNr"> 648 </span>    <span class="Delimiter">}</span>
+<span id="L649" class="LineNr"> 649 </span>    idx <span class="SpecialChar">&lt;-</span> increment
+<span id="L650" class="LineNr"> 650 </span>    increment col-idx
+<span id="L651" class="LineNr"> 651 </span>    <span class="PreProc">loop</span>
+<span id="L652" class="LineNr"> 652 </span>  <span class="Delimiter">}</span>
+<span id="L653" class="LineNr"> 653 </span><span class="Delimiter">}</span>
+<span id="L654" class="LineNr"> 654 </span>
+<span id="L655" class="LineNr"> 655 </span><span class="Comment"># various variants by screen-cell attribute; spaces in the 'expected' data should not match the attribute</span>
+<span id="L656" class="LineNr"> 656 </span>
+<span id="L657" class="LineNr"> 657 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L657'>check-screen-row-in-color</a></span> <a href='405screen.mu.html#L9'>screen</a>: (addr <a href='405screen.mu.html#L9'>screen</a>), fg: int, row-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
+<span id="L658" class="LineNr"> 658 </span>  <a href='405screen.mu.html#L661'>check-screen-row-in-color-from</a> <a href='405screen.mu.html#L9'>screen</a>, fg, row-idx, <span class="Constant">1</span>, expected, msg
+<span id="L659" class="LineNr"> 659 </span><span class="Delimiter">}</span>
+<span id="L660" class="LineNr"> 660 </span>
+<span id="L661" class="LineNr"> 661 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L661'>check-screen-row-in-color-from</a></span> screen-on-stack: (addr <a href='405screen.mu.html#L9'>screen</a>), fg: int, row-idx: int, col-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
+<span id="L662" class="LineNr"> 662 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> copy screen-on-stack
+<span id="L663" class="LineNr"> 663 </span>  <span class="PreProc">var</span> idx/<span class="Constant">ecx</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L281'>screen-cell-index</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, col-idx
+<span id="L664" class="LineNr"> 664 </span>  <span class="Comment"># compare 'expected' with the screen contents starting at 'idx', grapheme by grapheme</span>
+<span id="L665" class="LineNr"> 665 </span>  <span class="PreProc">var</span> e: (stream byte <span class="Constant">0x100</span>)
+<span id="L666" class="LineNr"> 666 </span>  <span class="PreProc">var</span> e-addr/<span class="Constant">edx</span>: (addr stream byte) <span class="SpecialChar">&lt;-</span> address e
+<span id="L667" class="LineNr"> 667 </span>  <a href='108write.subx.html#L24'>write</a> e-addr, expected
+<span id="L668" class="LineNr"> 668 </span>  <span class="Delimiter">{</span>
+<span id="L669" class="LineNr"> 669 </span>    <span class="PreProc">var</span> done?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='309stream.subx.html#L6'>stream-empty?</a> e-addr
+<span id="L670" class="LineNr"> 670 </span>    compare done?, <span class="Constant">0</span>
+<span id="L671" class="LineNr"> 671 </span>    <span class="PreProc">break-if-!=</span>
+<span id="L672" class="LineNr"> 672 </span>    <span class="PreProc">var</span> _g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L309'>screen-grapheme-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
+<span id="L673" class="LineNr"> 673 </span>    <span class="PreProc">var</span> g/<span class="Constant">ebx</span>: grapheme <span class="SpecialChar">&lt;-</span> copy _g
+<span id="L674" class="LineNr"> 674 </span>    <span class="PreProc">var</span> _expected-grapheme/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='403unicode.mu.html#L160'>read-grapheme</a> e-addr
+<span id="L675" class="LineNr"> 675 </span>    <span class="PreProc">var</span> expected-grapheme/<span class="Constant">edi</span>: grapheme <span class="SpecialChar">&lt;-</span> copy _expected-grapheme
+<span id="L676" class="LineNr"> 676 </span>    $check-screen-row-in-color-from:compare-cells: <span class="Delimiter">{</span>
+<span id="L677" class="LineNr"> 677 </span>      <span class="Comment"># if expected-grapheme is space, null grapheme is also ok</span>
+<span id="L678" class="LineNr"> 678 </span>      <span class="Delimiter">{</span>
+<span id="L679" class="LineNr"> 679 </span>        compare expected-grapheme, <span class="Constant">0x20</span>
+<span id="L680" class="LineNr"> 680 </span>        <span class="PreProc">break-if-!=</span>
+<span id="L681" class="LineNr"> 681 </span>        compare g, <span class="Constant">0</span>
+<span id="L682" class="LineNr"> 682 </span>        <span class="PreProc">break-if-=</span> $check-screen-row-in-color-from:compare-cells
+<span id="L683" class="LineNr"> 683 </span>      <span class="Delimiter">}</span>
+<span id="L684" class="LineNr"> 684 </span>      <span class="Comment"># if expected-grapheme is space, a different color is ok</span>
+<span id="L685" class="LineNr"> 685 </span>      <span class="Delimiter">{</span>
+<span id="L686" class="LineNr"> 686 </span>        compare expected-grapheme, <span class="Constant">0x20</span>
+<span id="L687" class="LineNr"> 687 </span>        <span class="PreProc">break-if-!=</span>
+<span id="L688" class="LineNr"> 688 </span>        <span class="PreProc">var</span> color/<span class="Constant">eax</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L326'>screen-color-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
+<span id="L689" class="LineNr"> 689 </span>        compare color, fg
+<span id="L690" class="LineNr"> 690 </span>        <span class="PreProc">break-if-!=</span> $check-screen-row-in-color-from:compare-cells
+<span id="L691" class="LineNr"> 691 </span>      <span class="Delimiter">}</span>
+<span id="L692" class="LineNr"> 692 </span>      <span class="Comment"># compare graphemes</span>
+<span id="L693" class="LineNr"> 693 </span>      $check-screen-row-in-color-from:compare-graphemes: <span class="Delimiter">{</span>
+<span id="L694" class="LineNr"> 694 </span>        <span class="Comment"># if (g == expected-grapheme) print &quot;.&quot;</span>
+<span id="L695" class="LineNr"> 695 </span>        compare g, expected-grapheme
+<span id="L696" class="LineNr"> 696 </span>        <span class="Delimiter">{</span>
+<span id="L697" class="LineNr"> 697 </span>          <span class="PreProc">break-if-!=</span>
+<span id="L698" class="LineNr"> 698 </span>          <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;.&quot;</span>
+<span id="L699" class="LineNr"> 699 </span>          <span class="PreProc">break</span> $check-screen-row-in-color-from:compare-graphemes
+<span id="L700" class="LineNr"> 700 </span>        <span class="Delimiter">}</span>
+<span id="L701" class="LineNr"> 701 </span>        <span class="Comment"># otherwise print an error</span>
+<span id="L702" class="LineNr"> 702 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> msg
+<span id="L703" class="LineNr"> 703 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;: expected '&quot;</span>
+<span id="L704" class="LineNr"> 704 </span>        <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> expected-grapheme
+<span id="L705" class="LineNr"> 705 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;' at (&quot;</span>
+<span id="L706" class="LineNr"> 706 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> row-idx
+<span id="L707" class="LineNr"> 707 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;, &quot;</span>
+<span id="L708" class="LineNr"> 708 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> col-idx
+<span id="L709" class="LineNr"> 709 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;) but observed '&quot;</span>
+<span id="L710" class="LineNr"> 710 </span>        <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> g
+<span id="L711" class="LineNr"> 711 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;'\n&quot;</span>
+<span id="L712" class="LineNr"> 712 </span>      <span class="Delimiter">}</span>
+<span id="L713" class="LineNr"> 713 </span>      $check-screen-row-in-color-from:compare-colors: <span class="Delimiter">{</span>
+<span id="L714" class="LineNr"> 714 </span>        <span class="PreProc">var</span> color/<span class="Constant">eax</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L326'>screen-color-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
+<span id="L715" class="LineNr"> 715 </span>        compare fg, color
+<span id="L716" class="LineNr"> 716 </span>        <span class="Delimiter">{</span>
+<span id="L717" class="LineNr"> 717 </span>          <span class="PreProc">break-if-!=</span>
+<span id="L718" class="LineNr"> 718 </span>          <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;.&quot;</span>
+<span id="L719" class="LineNr"> 719 </span>          <span class="PreProc">break</span> $check-screen-row-in-color-from:compare-colors
+<span id="L720" class="LineNr"> 720 </span>        <span class="Delimiter">}</span>
+<span id="L721" class="LineNr"> 721 </span>        <span class="Comment"># otherwise print an error</span>
+<span id="L722" class="LineNr"> 722 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> msg
+<span id="L723" class="LineNr"> 723 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;: expected '&quot;</span>
+<span id="L724" class="LineNr"> 724 </span>        <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> expected-grapheme
+<span id="L725" class="LineNr"> 725 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;' at (&quot;</span>
+<span id="L726" class="LineNr"> 726 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> row-idx
+<span id="L727" class="LineNr"> 727 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;, &quot;</span>
+<span id="L728" class="LineNr"> 728 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> col-idx
+<span id="L729" class="LineNr"> 729 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;) in color &quot;</span>
+<span id="L730" class="LineNr"> 730 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> fg
+<span id="L731" class="LineNr"> 731 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot; but observed color &quot;</span>
+<span id="L732" class="LineNr"> 732 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> color
+<span id="L733" class="LineNr"> 733 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;\n&quot;</span>
+<span id="L734" class="LineNr"> 734 </span>      <span class="Delimiter">}</span>
+<span id="L735" class="LineNr"> 735 </span>    <span class="Delimiter">}</span>
+<span id="L736" class="LineNr"> 736 </span>    idx <span class="SpecialChar">&lt;-</span> increment
+<span id="L737" class="LineNr"> 737 </span>    increment col-idx
+<span id="L738" class="LineNr"> 738 </span>    <span class="PreProc">loop</span>
+<span id="L739" class="LineNr"> 739 </span>  <span class="Delimiter">}</span>
+<span id="L740" class="LineNr"> 740 </span><span class="Delimiter">}</span>
+<span id="L741" class="LineNr"> 741 </span>
+<span id="L742" class="LineNr"> 742 </span><span class="Comment"># background color is visible even for spaces, so 'expected' behaves as an array of booleans.</span>
+<span id="L743" class="LineNr"> 743 </span><span class="Comment"># non-space = given background must match; space = background must not match</span>
+<span id="L744" class="LineNr"> 744 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L744'>check-screen-row-in-background-color</a></span> <a href='405screen.mu.html#L9'>screen</a>: (addr <a href='405screen.mu.html#L9'>screen</a>), bg: int, row-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
+<span id="L745" class="LineNr"> 745 </span>  <a href='405screen.mu.html#L748'>check-screen-row-in-background-color-from</a> <a href='405screen.mu.html#L9'>screen</a>, bg, row-idx, <span class="Constant">1</span>, expected, msg
+<span id="L746" class="LineNr"> 746 </span><span class="Delimiter">}</span>
+<span id="L747" class="LineNr"> 747 </span>
+<span id="L748" class="LineNr"> 748 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L748'>check-screen-row-in-background-color-from</a></span> screen-on-stack: (addr <a href='405screen.mu.html#L9'>screen</a>), bg: int, row-idx: int, col-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
+<span id="L749" class="LineNr"> 749 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> copy screen-on-stack
+<span id="L750" class="LineNr"> 750 </span>  <span class="PreProc">var</span> idx/<span class="Constant">ecx</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L281'>screen-cell-index</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, col-idx
+<span id="L751" class="LineNr"> 751 </span>  <span class="Comment"># compare 'expected' with the screen contents starting at 'idx', grapheme by grapheme</span>
+<span id="L752" class="LineNr"> 752 </span>  <span class="PreProc">var</span> e: (stream byte <span class="Constant">0x100</span>)
+<span id="L753" class="LineNr"> 753 </span>  <span class="PreProc">var</span> e-addr/<span class="Constant">edx</span>: (addr stream byte) <span class="SpecialChar">&lt;-</span> address e
+<span id="L754" class="LineNr"> 754 </span>  <a href='108write.subx.html#L24'>write</a> e-addr, expected
+<span id="L755" class="LineNr"> 755 </span>  <span class="Delimiter">{</span>
+<span id="L756" class="LineNr"> 756 </span>    <span class="PreProc">var</span> done?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='309stream.subx.html#L6'>stream-empty?</a> e-addr
+<span id="L757" class="LineNr"> 757 </span>    compare done?, <span class="Constant">0</span>
+<span id="L758" class="LineNr"> 758 </span>    <span class="PreProc">break-if-!=</span>
+<span id="L759" class="LineNr"> 759 </span>    <span class="PreProc">var</span> _g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L309'>screen-grapheme-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
+<span id="L760" class="LineNr"> 760 </span>    <span class="PreProc">var</span> g/<span class="Constant">ebx</span>: grapheme <span class="SpecialChar">&lt;-</span> copy _g
+<span id="L761" class="LineNr"> 761 </span>    <span class="PreProc">var</span> _expected-grapheme/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='403unicode.mu.html#L160'>read-grapheme</a> e-addr
+<span id="L762" class="LineNr"> 762 </span>    <span class="PreProc">var</span> expected-grapheme/<span class="Constant">edx</span>: grapheme <span class="SpecialChar">&lt;-</span> copy _expected-grapheme
+<span id="L763" class="LineNr"> 763 </span>    $check-screen-row-in-background-color-from:compare-cells: <span class="Delimiter">{</span>
+<span id="L764" class="LineNr"> 764 </span>      <span class="Comment"># if expected-grapheme is space, null grapheme is also ok</span>
+<span id="L765" class="LineNr"> 765 </span>      <span class="Delimiter">{</span>
+<span id="L766" class="LineNr"> 766 </span>        compare expected-grapheme, <span class="Constant">0x20</span>
+<span id="L767" class="LineNr"> 767 </span>        <span class="PreProc">break-if-!=</span>
+<span id="L768" class="LineNr"> 768 </span>        compare g, <span class="Constant">0</span>
+<span id="L769" class="LineNr"> 769 </span>        <span class="PreProc">break-if-=</span> $check-screen-row-in-background-color-from:compare-cells
+<span id="L770" class="LineNr"> 770 </span>      <span class="Delimiter">}</span>
+<span id="L771" class="LineNr"> 771 </span>      <span class="Comment"># if expected-grapheme is space, a different color is ok</span>
+<span id="L772" class="LineNr"> 772 </span>      <span class="Delimiter">{</span>
+<span id="L773" class="LineNr"> 773 </span>        compare expected-grapheme, <span class="Constant">0x20</span>
+<span id="L774" class="LineNr"> 774 </span>        <span class="PreProc">break-if-!=</span>
+<span id="L775" class="LineNr"> 775 </span>        <span class="PreProc">var</span> color/<span class="Constant">eax</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L343'>screen-background-color-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
+<span id="L776" class="LineNr"> 776 </span>        compare color, bg
+<span id="L777" class="LineNr"> 777 </span>        <span class="PreProc">break-if-!=</span> $check-screen-row-in-background-color-from:compare-cells
+<span id="L778" class="LineNr"> 778 </span>      <span class="Delimiter">}</span>
+<span id="L779" class="LineNr"> 779 </span>      <span class="Comment"># compare graphemes</span>
+<span id="L780" class="LineNr"> 780 </span>      $check-screen-row-in-background-color-from:compare-graphemes: <span class="Delimiter">{</span>
+<span id="L781" class="LineNr"> 781 </span>        <span class="Comment"># if (g == expected-grapheme) print &quot;.&quot;</span>
+<span id="L782" class="LineNr"> 782 </span>        compare g, expected-grapheme
+<span id="L783" class="LineNr"> 783 </span>        <span class="Delimiter">{</span>
+<span id="L784" class="LineNr"> 784 </span>          <span class="PreProc">break-if-!=</span>
+<span id="L785" class="LineNr"> 785 </span>          <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;.&quot;</span>
+<span id="L786" class="LineNr"> 786 </span>          <span class="PreProc">break</span> $check-screen-row-in-background-color-from:compare-graphemes
+<span id="L787" class="LineNr"> 787 </span>        <span class="Delimiter">}</span>
+<span id="L788" class="LineNr"> 788 </span>        <span class="Comment"># otherwise print an error</span>
+<span id="L789" class="LineNr"> 789 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> msg
+<span id="L790" class="LineNr"> 790 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;: expected '&quot;</span>
+<span id="L791" class="LineNr"> 791 </span>        <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> expected-grapheme
+<span id="L792" class="LineNr"> 792 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;' at (&quot;</span>
+<span id="L793" class="LineNr"> 793 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> row-idx
+<span id="L794" class="LineNr"> 794 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;, &quot;</span>
+<span id="L795" class="LineNr"> 795 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> col-idx
+<span id="L796" class="LineNr"> 796 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;) but observed '&quot;</span>
+<span id="L797" class="LineNr"> 797 </span>        <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> g
+<span id="L798" class="LineNr"> 798 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;'\n&quot;</span>
+<span id="L799" class="LineNr"> 799 </span>      <span class="Delimiter">}</span>
+<span id="L800" class="LineNr"> 800 </span>      $check-screen-row-in-background-color-from:compare-colors: <span class="Delimiter">{</span>
+<span id="L801" class="LineNr"> 801 </span>        <span class="PreProc">var</span> color/<span class="Constant">eax</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L343'>screen-background-color-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
+<span id="L802" class="LineNr"> 802 </span>        compare bg, color
+<span id="L803" class="LineNr"> 803 </span>        <span class="Delimiter">{</span>
+<span id="L804" class="LineNr"> 804 </span>          <span class="PreProc">break-if-!=</span>
+<span id="L805" class="LineNr"> 805 </span>          <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;.&quot;</span>
+<span id="L806" class="LineNr"> 806 </span>          <span class="PreProc">break</span> $check-screen-row-in-background-color-from:compare-colors
+<span id="L807" class="LineNr"> 807 </span>        <span class="Delimiter">}</span>
+<span id="L808" class="LineNr"> 808 </span>        <span class="Comment"># otherwise print an error</span>
+<span id="L809" class="LineNr"> 809 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> msg
+<span id="L810" class="LineNr"> 810 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;: expected '&quot;</span>
+<span id="L811" class="LineNr"> 811 </span>        <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> expected-grapheme
+<span id="L812" class="LineNr"> 812 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;' at (&quot;</span>
+<span id="L813" class="LineNr"> 813 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> row-idx
+<span id="L814" class="LineNr"> 814 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;, &quot;</span>
+<span id="L815" class="LineNr"> 815 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> col-idx
+<span id="L816" class="LineNr"> 816 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;) in background color &quot;</span>
+<span id="L817" class="LineNr"> 817 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> bg
+<span id="L818" class="LineNr"> 818 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot; but observed color &quot;</span>
+<span id="L819" class="LineNr"> 819 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> color
+<span id="L820" class="LineNr"> 820 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;\n&quot;</span>
+<span id="L821" class="LineNr"> 821 </span>      <span class="Delimiter">}</span>
+<span id="L822" class="LineNr"> 822 </span>    <span class="Delimiter">}</span>
+<span id="L823" class="LineNr"> 823 </span>    idx <span class="SpecialChar">&lt;-</span> increment
+<span id="L824" class="LineNr"> 824 </span>    increment col-idx
+<span id="L825" class="LineNr"> 825 </span>    <span class="PreProc">loop</span>
+<span id="L826" class="LineNr"> 826 </span>  <span class="Delimiter">}</span>
+<span id="L827" class="LineNr"> 827 </span><span class="Delimiter">}</span>
+<span id="L828" class="LineNr"> 828 </span>
+<span id="L829" class="LineNr"> 829 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L829'>check-screen-row-in-bold</a></span> <a href='405screen.mu.html#L9'>screen</a>: (addr <a href='405screen.mu.html#L9'>screen</a>), row-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
+<span id="L830" class="LineNr"> 830 </span>  <a href='405screen.mu.html#L833'>check-screen-row-in-bold-from</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, <span class="Constant">1</span>, expected, msg
+<span id="L831" class="LineNr"> 831 </span><span class="Delimiter">}</span>
+<span id="L832" class="LineNr"> 832 </span>
+<span id="L833" class="LineNr"> 833 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L833'>check-screen-row-in-bold-from</a></span> screen-on-stack: (addr <a href='405screen.mu.html#L9'>screen</a>), row-idx: int, col-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
+<span id="L834" class="LineNr"> 834 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> copy screen-on-stack
+<span id="L835" class="LineNr"> 835 </span>  <span class="PreProc">var</span> idx/<span class="Constant">ecx</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L281'>screen-cell-index</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, col-idx
+<span id="L836" class="LineNr"> 836 </span>  <span class="Comment"># compare 'expected' with the screen contents starting at 'idx', grapheme by grapheme</span>
+<span id="L837" class="LineNr"> 837 </span>  <span class="PreProc">var</span> e: (stream byte <span class="Constant">0x100</span>)
+<span id="L838" class="LineNr"> 838 </span>  <span class="PreProc">var</span> e-addr/<span class="Constant">edx</span>: (addr stream byte) <span class="SpecialChar">&lt;-</span> address e
+<span id="L839" class="LineNr"> 839 </span>  <a href='108write.subx.html#L24'>write</a> e-addr, expected
+<span id="L840" class="LineNr"> 840 </span>  <span class="Delimiter">{</span>
+<span id="L841" class="LineNr"> 841 </span>    <span class="PreProc">var</span> done?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='309stream.subx.html#L6'>stream-empty?</a> e-addr
+<span id="L842" class="LineNr"> 842 </span>    compare done?, <span class="Constant">0</span>
+<span id="L843" class="LineNr"> 843 </span>    <span class="PreProc">break-if-!=</span>
+<span id="L844" class="LineNr"> 844 </span>    <span class="PreProc">var</span> _g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L309'>screen-grapheme-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
+<span id="L845" class="LineNr"> 845 </span>    <span class="PreProc">var</span> g/<span class="Constant">ebx</span>: grapheme <span class="SpecialChar">&lt;-</span> copy _g
+<span id="L846" class="LineNr"> 846 </span>    <span class="PreProc">var</span> _expected-grapheme/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='403unicode.mu.html#L160'>read-grapheme</a> e-addr
+<span id="L847" class="LineNr"> 847 </span>    <span class="PreProc">var</span> expected-grapheme/<span class="Constant">edx</span>: grapheme <span class="SpecialChar">&lt;-</span> copy _expected-grapheme
+<span id="L848" class="LineNr"> 848 </span>    $check-screen-row-in-bold-from:compare-cells: <span class="Delimiter">{</span>
+<span id="L849" class="LineNr"> 849 </span>      <span class="Comment"># if expected-grapheme is space, null grapheme is also ok</span>
+<span id="L850" class="LineNr"> 850 </span>      <span class="Delimiter">{</span>
+<span id="L851" class="LineNr"> 851 </span>        compare expected-grapheme, <span class="Constant">0x20</span>
+<span id="L852" class="LineNr"> 852 </span>        <span class="PreProc">break-if-!=</span>
+<span id="L853" class="LineNr"> 853 </span>        compare g, <span class="Constant">0</span>
+<span id="L854" class="LineNr"> 854 </span>        <span class="PreProc">break-if-=</span> $check-screen-row-in-bold-from:compare-cells
+<span id="L855" class="LineNr"> 855 </span>      <span class="Delimiter">}</span>
+<span id="L856" class="LineNr"> 856 </span>      <span class="Comment"># if expected-grapheme is space, non-bold is ok</span>
+<span id="L857" class="LineNr"> 857 </span>      <span class="Delimiter">{</span>
+<span id="L858" class="LineNr"> 858 </span>        compare expected-grapheme, <span class="Constant">0x20</span>
+<span id="L859" class="LineNr"> 859 </span>        <span class="PreProc">break-if-!=</span>
+<span id="L860" class="LineNr"> 860 </span>        <span class="PreProc">var</span> bold?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L360'>screen-bold-at-idx?</a> <a href='405screen.mu.html#L9'>screen</a>, idx
+<span id="L861" class="LineNr"> 861 </span>        compare bold?, <span class="Constant">1</span>
+<span id="L862" class="LineNr"> 862 </span>        <span class="PreProc">break-if-!=</span> $check-screen-row-in-bold-from:compare-cells
+<span id="L863" class="LineNr"> 863 </span>      <span class="Delimiter">}</span>
+<span id="L864" class="LineNr"> 864 </span>      <span class="Comment"># compare graphemes</span>
+<span id="L865" class="LineNr"> 865 </span>      $check-screen-row-in-bold-from:compare-graphemes: <span class="Delimiter">{</span>
+<span id="L866" class="LineNr"> 866 </span>        <span class="Comment"># if (g == expected-grapheme) print &quot;.&quot;</span>
+<span id="L867" class="LineNr"> 867 </span>        compare g, expected-grapheme
+<span id="L868" class="LineNr"> 868 </span>        <span class="Delimiter">{</span>
+<span id="L869" class="LineNr"> 869 </span>          <span class="PreProc">break-if-!=</span>
+<span id="L870" class="LineNr"> 870 </span>          <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;.&quot;</span>
+<span id="L871" class="LineNr"> 871 </span>          <span class="PreProc">break</span> $check-screen-row-in-bold-from:compare-graphemes
+<span id="L872" class="LineNr"> 872 </span>        <span class="Delimiter">}</span>
+<span id="L873" class="LineNr"> 873 </span>        <span class="Comment"># otherwise print an error</span>
+<span id="L874" class="LineNr"> 874 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> msg
+<span id="L875" class="LineNr"> 875 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;: expected '&quot;</span>
+<span id="L876" class="LineNr"> 876 </span>        <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> expected-grapheme
+<span id="L877" class="LineNr"> 877 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;' at (&quot;</span>
+<span id="L878" class="LineNr"> 878 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> row-idx
+<span id="L879" class="LineNr"> 879 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;, &quot;</span>
+<span id="L880" class="LineNr"> 880 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> col-idx
+<span id="L881" class="LineNr"> 881 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;) but observed '&quot;</span>
+<span id="L882" class="LineNr"> 882 </span>        <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> g
+<span id="L883" class="LineNr"> 883 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;'\n&quot;</span>
+<span id="L884" class="LineNr"> 884 </span>      <span class="Delimiter">}</span>
+<span id="L885" class="LineNr"> 885 </span>      $check-screen-row-in-bold-from:compare-bold: <span class="Delimiter">{</span>
+<span id="L886" class="LineNr"> 886 </span>        <span class="PreProc">var</span> bold?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L360'>screen-bold-at-idx?</a> <a href='405screen.mu.html#L9'>screen</a>, idx
+<span id="L887" class="LineNr"> 887 </span>        compare bold?, <span class="Constant">1</span>
+<span id="L888" class="LineNr"> 888 </span>        <span class="Delimiter">{</span>
+<span id="L889" class="LineNr"> 889 </span>          <span class="PreProc">break-if-!=</span>
+<span id="L890" class="LineNr"> 890 </span>          <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;.&quot;</span>
+<span id="L891" class="LineNr"> 891 </span>          <span class="PreProc">break</span> $check-screen-row-in-bold-from:compare-bold
+<span id="L892" class="LineNr"> 892 </span>        <span class="Delimiter">}</span>
+<span id="L893" class="LineNr"> 893 </span>        <span class="Comment"># otherwise print an error</span>
+<span id="L894" class="LineNr"> 894 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> msg
+<span id="L895" class="LineNr"> 895 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;: expected '&quot;</span>
+<span id="L896" class="LineNr"> 896 </span>        <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> expected-grapheme
+<span id="L897" class="LineNr"> 897 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;' at (&quot;</span>
+<span id="L898" class="LineNr"> 898 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> row-idx
+<span id="L899" class="LineNr"> 899 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;, &quot;</span>
+<span id="L900" class="LineNr"> 900 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> col-idx
+<span id="L901" class="LineNr"> 901 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;) to be in bold\n&quot;</span>
+<span id="L902" class="LineNr"> 902 </span>      <span class="Delimiter">}</span>
+<span id="L903" class="LineNr"> 903 </span>    <span class="Delimiter">}</span>
+<span id="L904" class="LineNr"> 904 </span>    idx <span class="SpecialChar">&lt;-</span> increment
+<span id="L905" class="LineNr"> 905 </span>    increment col-idx
+<span id="L906" class="LineNr"> 906 </span>    <span class="PreProc">loop</span>
+<span id="L907" class="LineNr"> 907 </span>  <span class="Delimiter">}</span>
+<span id="L908" class="LineNr"> 908 </span><span class="Delimiter">}</span>
+<span id="L909" class="LineNr"> 909 </span>
+<span id="L910" class="LineNr"> 910 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L910'>check-screen-row-in-underline</a></span> <a href='405screen.mu.html#L9'>screen</a>: (addr <a href='405screen.mu.html#L9'>screen</a>), row-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
+<span id="L911" class="LineNr"> 911 </span>  <a href='405screen.mu.html#L914'>check-screen-row-in-underline-from</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, <span class="Constant">1</span>, expected, msg
+<span id="L912" class="LineNr"> 912 </span><span class="Delimiter">}</span>
+<span id="L913" class="LineNr"> 913 </span>
+<span id="L914" class="LineNr"> 914 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L914'>check-screen-row-in-underline-from</a></span> screen-on-stack: (addr <a href='405screen.mu.html#L9'>screen</a>), row-idx: int, col-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
+<span id="L915" class="LineNr"> 915 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> copy screen-on-stack
+<span id="L916" class="LineNr"> 916 </span>  <span class="PreProc">var</span> idx/<span class="Constant">ecx</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L281'>screen-cell-index</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, col-idx
+<span id="L917" class="LineNr"> 917 </span>  <span class="Comment"># compare 'expected' with the screen contents starting at 'idx', grapheme by grapheme</span>
+<span id="L918" class="LineNr"> 918 </span>  <span class="PreProc">var</span> e: (stream byte <span class="Constant">0x100</span>)
+<span id="L919" class="LineNr"> 919 </span>  <span class="PreProc">var</span> e-addr/<span class="Constant">edx</span>: (addr stream byte) <span class="SpecialChar">&lt;-</span> address e
+<span id="L920" class="LineNr"> 920 </span>  <a href='108write.subx.html#L24'>write</a> e-addr, expected
+<span id="L921" class="LineNr"> 921 </span>  <span class="Delimiter">{</span>
+<span id="L922" class="LineNr"> 922 </span>    <span class="PreProc">var</span> done?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='309stream.subx.html#L6'>stream-empty?</a> e-addr
+<span id="L923" class="LineNr"> 923 </span>    compare done?, <span class="Constant">0</span>
+<span id="L924" class="LineNr"> 924 </span>    <span class="PreProc">break-if-!=</span>
+<span id="L925" class="LineNr"> 925 </span>    <span class="PreProc">var</span> _g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L309'>screen-grapheme-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
+<span id="L926" class="LineNr"> 926 </span>    <span class="PreProc">var</span> g/<span class="Constant">ebx</span>: grapheme <span class="SpecialChar">&lt;-</span> copy _g
+<span id="L927" class="LineNr"> 927 </span>    <span class="PreProc">var</span> _expected-grapheme/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='403unicode.mu.html#L160'>read-grapheme</a> e-addr
+<span id="L928" class="LineNr"> 928 </span>    <span class="PreProc">var</span> expected-grapheme/<span class="Constant">edx</span>: grapheme <span class="SpecialChar">&lt;-</span> copy _expected-grapheme
+<span id="L929" class="LineNr"> 929 </span>    $check-screen-row-in-underline-from:compare-cells: <span class="Delimiter">{</span>
+<span id="L930" class="LineNr"> 930 </span>      <span class="Comment"># if expected-grapheme is space, null grapheme is also ok</span>
+<span id="L931" class="LineNr"> 931 </span>      <span class="Delimiter">{</span>
+<span id="L932" class="LineNr"> 932 </span>        compare expected-grapheme, <span class="Constant">0x20</span>
+<span id="L933" class="LineNr"> 933 </span>        <span class="PreProc">break-if-!=</span>
+<span id="L934" class="LineNr"> 934 </span>        compare g, <span class="Constant">0</span>
+<span id="L935" class="LineNr"> 935 </span>        <span class="PreProc">break-if-=</span> $check-screen-row-in-underline-from:compare-cells
+<span id="L936" class="LineNr"> 936 </span>      <span class="Delimiter">}</span>
+<span id="L937" class="LineNr"> 937 </span>      <span class="Comment"># if expected-grapheme is space, non-underline is ok</span>
+<span id="L938" class="LineNr"> 938 </span>      <span class="Delimiter">{</span>
+<span id="L939" class="LineNr"> 939 </span>        compare expected-grapheme, <span class="Constant">0x20</span>
+<span id="L940" class="LineNr"> 940 </span>        <span class="PreProc">break-if-!=</span>
+<span id="L941" class="LineNr"> 941 </span>        <span class="PreProc">var</span> underline?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L377'>screen-underline-at-idx?</a> <a href='405screen.mu.html#L9'>screen</a>, idx
+<span id="L942" class="LineNr"> 942 </span>        compare underline?, <span class="Constant">1</span>
+<span id="L943" class="LineNr"> 943 </span>        <span class="PreProc">break-if-!=</span> $check-screen-row-in-underline-from:compare-cells
+<span id="L944" class="LineNr"> 944 </span>      <span class="Delimiter">}</span>
+<span id="L945" class="LineNr"> 945 </span>      <span class="Comment"># compare graphemes</span>
+<span id="L946" class="LineNr"> 946 </span>      $check-screen-row-in-underline-from:compare-graphemes: <span class="Delimiter">{</span>
+<span id="L947" class="LineNr"> 947 </span>        <span class="Comment"># if (g == expected-grapheme) print &quot;.&quot;</span>
+<span id="L948" class="LineNr"> 948 </span>        compare g, expected-grapheme
+<span id="L949" class="LineNr"> 949 </span>        <span class="Delimiter">{</span>
+<span id="L950" class="LineNr"> 950 </span>          <span class="PreProc">break-if-!=</span>
+<span id="L951" class="LineNr"> 951 </span>          <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;.&quot;</span>
+<span id="L952" class="LineNr"> 952 </span>          <span class="PreProc">break</span> $check-screen-row-in-underline-from:compare-graphemes
+<span id="L953" class="LineNr"> 953 </span>        <span class="Delimiter">}</span>
+<span id="L954" class="LineNr"> 954 </span>        <span class="Comment"># otherwise print an error</span>
+<span id="L955" class="LineNr"> 955 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> msg
+<span id="L956" class="LineNr"> 956 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;: expected '&quot;</span>
+<span id="L957" class="LineNr"> 957 </span>        <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> expected-grapheme
+<span id="L958" class="LineNr"> 958 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;' at (&quot;</span>
+<span id="L959" class="LineNr"> 959 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> row-idx
+<span id="L960" class="LineNr"> 960 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;, &quot;</span>
+<span id="L961" class="LineNr"> 961 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> col-idx
+<span id="L962" class="LineNr"> 962 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;) but observed '&quot;</span>
+<span id="L963" class="LineNr"> 963 </span>        <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> g
+<span id="L964" class="LineNr"> 964 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;'\n&quot;</span>
+<span id="L965" class="LineNr"> 965 </span>      <span class="Delimiter">}</span>
+<span id="L966" class="LineNr"> 966 </span>      $check-screen-row-in-underline-from:compare-underline: <span class="Delimiter">{</span>
+<span id="L967" class="LineNr"> 967 </span>        <span class="PreProc">var</span> underline?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L377'>screen-underline-at-idx?</a> <a href='405screen.mu.html#L9'>screen</a>, idx
+<span id="L968" class="LineNr"> 968 </span>        compare underline?, <span class="Constant">1</span>
+<span id="L969" class="LineNr"> 969 </span>        <span class="Delimiter">{</span>
+<span id="L970" class="LineNr"> 970 </span>          <span class="PreProc">break-if-!=</span>
+<span id="L971" class="LineNr"> 971 </span>          <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;.&quot;</span>
+<span id="L972" class="LineNr"> 972 </span>          <span class="PreProc">break</span> $check-screen-row-in-underline-from:compare-underline
+<span id="L973" class="LineNr"> 973 </span>        <span class="Delimiter">}</span>
+<span id="L974" class="LineNr"> 974 </span>        <span class="Comment"># otherwise print an error</span>
+<span id="L975" class="LineNr"> 975 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> msg
+<span id="L976" class="LineNr"> 976 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;: expected '&quot;</span>
+<span id="L977" class="LineNr"> 977 </span>        <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> expected-grapheme
+<span id="L978" class="LineNr"> 978 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;' at (&quot;</span>
+<span id="L979" class="LineNr"> 979 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> row-idx
+<span id="L980" class="LineNr"> 980 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;, &quot;</span>
+<span id="L981" class="LineNr"> 981 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> col-idx
+<span id="L982" class="LineNr"> 982 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;) to be underlined\n&quot;</span>
+<span id="L983" class="LineNr"> 983 </span>      <span class="Delimiter">}</span>
+<span id="L984" class="LineNr"> 984 </span>    <span class="Delimiter">}</span>
+<span id="L985" class="LineNr"> 985 </span>    idx <span class="SpecialChar">&lt;-</span> increment
+<span id="L986" class="LineNr"> 986 </span>    increment col-idx
+<span id="L987" class="LineNr"> 987 </span>    <span class="PreProc">loop</span>
+<span id="L988" class="LineNr"> 988 </span>  <span class="Delimiter">}</span>
+<span id="L989" class="LineNr"> 989 </span><span class="Delimiter">}</span>
+<span id="L990" class="LineNr"> 990 </span>
+<span id="L991" class="LineNr"> 991 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L991'>check-screen-row-in-reverse</a></span> <a href='405screen.mu.html#L9'>screen</a>: (addr <a href='405screen.mu.html#L9'>screen</a>), row-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
+<span id="L992" class="LineNr"> 992 </span>  <a href='405screen.mu.html#L995'>check-screen-row-in-reverse-from</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, <span class="Constant">1</span>, expected, msg
 <span id="L993" class="LineNr"> 993 </span><span class="Delimiter">}</span>
 <span id="L994" class="LineNr"> 994 </span>
-<span id="L995" class="LineNr"> 995 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L995'>test-move-cursor-column-too-large</a></span> <span class="Delimiter">{</span>
-<span id="L996" class="LineNr"> 996 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L997" class="LineNr"> 997 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L998" class="LineNr"> 998 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">3</span>  <span class="Comment"># 5 rows, 3 columns</span>
-<span id="L999" class="LineNr"> 999 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">4</span>  <span class="Comment"># row 1, column 4 (overflow)</span>
-<span id="L1000" class="LineNr">1000 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
-<span id="L1001" class="LineNr">1001 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1002" class="LineNr">1002 </span>  <span class="Comment"># top row is empty</span>
-<span id="L1003" class="LineNr">1003 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;   &quot;</span>, <span class="Constant">&quot;F - test-move-cursor-column-too-large&quot;</span>
-<span id="L1004" class="LineNr">1004 </span>  <span class="Comment"># character shows up on next row</span>
-<span id="L1005" class="LineNr">1005 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">2</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor-column-too-large&quot;</span>
-<span id="L1006" class="LineNr">1006 </span><span class="Delimiter">}</span>
-<span id="L1007" class="LineNr">1007 </span>
-<span id="L1008" class="LineNr">1008 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1008'>test-move-cursor-column-too-large-saturates</a></span> <span class="Delimiter">{</span>
-<span id="L1009" class="LineNr">1009 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1010" class="LineNr">1010 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L1011" class="LineNr">1011 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">3</span>  <span class="Comment"># 5 rows, 3 columns</span>
-<span id="L1012" class="LineNr">1012 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">6</span>  <span class="Comment"># row 1, column 6 (overflow)</span>
-<span id="L1013" class="LineNr">1013 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
-<span id="L1014" class="LineNr">1014 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1015" class="LineNr">1015 </span>  <span class="Comment"># top row is empty</span>
-<span id="L1016" class="LineNr">1016 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;   &quot;</span>, <span class="Constant">&quot;F - test-move-cursor-column-too-large-saturates&quot;</span>  <span class="Comment"># top-left corner of the screen</span>
-<span id="L1017" class="LineNr">1017 </span>  <span class="Comment"># character shows up at the start of next row</span>
-<span id="L1018" class="LineNr">1018 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">2</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor-column-too-large-saturates&quot;</span>  <span class="Comment"># top-left corner of the screen</span>
-<span id="L1019" class="LineNr">1019 </span><span class="Delimiter">}</span>
-<span id="L1020" class="LineNr">1020 </span>
-<span id="L1021" class="LineNr">1021 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1021'>test-move-cursor-row-too-large</a></span> <span class="Delimiter">{</span>
-<span id="L1022" class="LineNr">1022 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1023" class="LineNr">1023 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L1024" class="LineNr">1024 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">3</span>  <span class="Comment"># 5 rows</span>
-<span id="L1025" class="LineNr">1025 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">6</span>, <span class="Constant">2</span>  <span class="Comment"># row 6 (overflow)</span>
-<span id="L1026" class="LineNr">1026 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
-<span id="L1027" class="LineNr">1027 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1028" class="LineNr">1028 </span>  <span class="Comment"># bottom row shows the character</span>
-<span id="L1029" class="LineNr">1029 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">&quot; a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor-row-too-large&quot;</span>
-<span id="L1030" class="LineNr">1030 </span><span class="Delimiter">}</span>
-<span id="L1031" class="LineNr">1031 </span>
-<span id="L1032" class="LineNr">1032 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1032'>test-move-cursor-row-too-large-saturates</a></span> <span class="Delimiter">{</span>
-<span id="L1033" class="LineNr">1033 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1034" class="LineNr">1034 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L1035" class="LineNr">1035 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">3</span>  <span class="Comment"># 5 rows</span>
-<span id="L1036" class="LineNr">1036 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">9</span>, <span class="Constant">2</span>  <span class="Comment"># row 9 (overflow)</span>
-<span id="L1037" class="LineNr">1037 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
-<span id="L1038" class="LineNr">1038 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1039" class="LineNr">1039 </span>  <span class="Comment"># bottom row shows the character</span>
-<span id="L1040" class="LineNr">1040 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">&quot; a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor-row-too-large-saturates&quot;</span>
-<span id="L1041" class="LineNr">1041 </span><span class="Delimiter">}</span>
-<span id="L1042" class="LineNr">1042 </span>
-<span id="L1043" class="LineNr">1043 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1043'>test-check-screen-row-from</a></span> <span class="Delimiter">{</span>
-<span id="L1044" class="LineNr">1044 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1045" class="LineNr">1045 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L1046" class="LineNr">1046 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
-<span id="L1047" class="LineNr">1047 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">4</span>
-<span id="L1048" class="LineNr">1048 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
-<span id="L1049" class="LineNr">1049 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1050" class="LineNr">1050 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;   a&quot;</span>, <span class="Constant">&quot;F - <a href='405screen.mu.html#L1043'>test-check-screen-row-from</a>/baseline&quot;</span>
-<span id="L1051" class="LineNr">1051 </span>  <a href='405screen.mu.html#L607'>check-screen-row-from</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">4</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - test-check-screen-row-from&quot;</span>
-<span id="L1052" class="LineNr">1052 </span><span class="Delimiter">}</span>
-<span id="L1053" class="LineNr">1053 </span>
-<span id="L1054" class="LineNr">1054 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1054'>test-print-string-overflows-to-next-row</a></span> <span class="Delimiter">{</span>
-<span id="L1055" class="LineNr">1055 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1056" class="LineNr">1056 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L1057" class="LineNr">1057 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>  <span class="Comment"># 5 rows, 4 columns</span>
-<span id="L1058" class="LineNr">1058 </span>  <a href='405screen.mu.html#L179'>print-string</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">&quot;abcdefg&quot;</span>
-<span id="L1059" class="LineNr">1059 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;abcd&quot;</span>, <span class="Constant">&quot;F - test-print-string-overflows-to-next-row&quot;</span>
-<span id="L1060" class="LineNr">1060 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">2</span>, <span class="Constant">&quot;efg&quot;</span>, <span class="Constant">&quot;F - test-print-string-overflows-to-next-row&quot;</span>
-<span id="L1061" class="LineNr">1061 </span><span class="Delimiter">}</span>
-<span id="L1062" class="LineNr">1062 </span>
-<span id="L1063" class="LineNr">1063 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1063'>test-check-screen-scrolls-on-overflow</a></span> <span class="Delimiter">{</span>
-<span id="L1064" class="LineNr">1064 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1065" class="LineNr">1065 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L1066" class="LineNr">1066 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
-<span id="L1067" class="LineNr">1067 </span>  <span class="Comment"># single character starting at bottom right</span>
-<span id="L1068" class="LineNr">1068 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
-<span id="L1069" class="LineNr">1069 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
-<span id="L1070" class="LineNr">1070 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1071" class="LineNr">1071 </span>  <a href='405screen.mu.html#L607'>check-screen-row-from</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - <a href='405screen.mu.html#L1063'>test-check-screen-scrolls-on-overflow</a>/baseline&quot;</span>  <span class="Comment"># bottom-right corner of the screen</span>
-<span id="L1072" class="LineNr">1072 </span>  <span class="Comment"># multiple characters starting at bottom right</span>
-<span id="L1073" class="LineNr">1073 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
-<span id="L1074" class="LineNr">1074 </span>  <a href='405screen.mu.html#L179'>print-string</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">&quot;ab&quot;</span>
-<span id="L1075" class="LineNr">1075 </span>  <span class="Comment"># screen scrolled up one row</span>
-<span id="L1076" class="LineNr">1076 </span><span class="CommentedCode">#?   check-screen-row screen, 1, &quot;    &quot;, &quot;F - test-check-screen-scrolls-on-overflow/x1&quot;</span>
-<span id="L1077" class="LineNr">1077 </span><span class="CommentedCode">#?   check-screen-row screen, 2, &quot;    &quot;, &quot;F - test-check-screen-scrolls-on-overflow/x2&quot;</span>
-<span id="L1078" class="LineNr">1078 </span><span class="CommentedCode">#?   check-screen-row screen, 3, &quot;    &quot;, &quot;F - test-check-screen-scrolls-on-overflow/x3&quot;</span>
-<span id="L1079" class="LineNr">1079 </span><span class="CommentedCode">#?   check-screen-row screen, 4, &quot;   a&quot;, &quot;F - test-check-screen-scrolls-on-overflow/x4&quot;</span>
-<span id="L1080" class="LineNr">1080 </span><span class="CommentedCode">#?   check-screen-row screen, 5, &quot;b   &quot;, &quot;F - test-check-screen-scrolls-on-overflow/x5&quot;</span>
-<span id="L1081" class="LineNr">1081 </span>  <a href='405screen.mu.html#L607'>check-screen-row-from</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">4</span>, <span class="Constant">4</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - <a href='405screen.mu.html#L1063'>test-check-screen-scrolls-on-overflow</a>/1&quot;</span>
-<span id="L1082" class="LineNr">1082 </span>  <a href='405screen.mu.html#L607'>check-screen-row-from</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">1</span>, <span class="Constant">&quot;b&quot;</span>, <span class="Constant">&quot;F - <a href='405screen.mu.html#L1063'>test-check-screen-scrolls-on-overflow</a>/2&quot;</span>
-<span id="L1083" class="LineNr">1083 </span><span class="Delimiter">}</span>
-<span id="L1084" class="LineNr">1084 </span>
-<span id="L1085" class="LineNr">1085 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1085'>test-check-screen-color</a></span> <span class="Delimiter">{</span>
-<span id="L1086" class="LineNr">1086 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1087" class="LineNr">1087 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L1088" class="LineNr">1088 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
-<span id="L1089" class="LineNr">1089 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
-<span id="L1090" class="LineNr">1090 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1091" class="LineNr">1091 </span>  <a href='405screen.mu.html#L464'>start-color</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">0</span>  <span class="Comment"># foreground=1</span>
-<span id="L1092" class="LineNr">1092 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x62</span>  <span class="Comment"># 'b'</span>
-<span id="L1093" class="LineNr">1093 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1094" class="LineNr">1094 </span>  <a href='405screen.mu.html#L464'>start-color</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">0</span>, <span class="Constant">0</span>  <span class="Comment"># back to default</span>
-<span id="L1095" class="LineNr">1095 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x63</span>  <span class="Comment"># 'c'</span>
-<span id="L1096" class="LineNr">1096 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1097" class="LineNr">1097 </span>  <a href='405screen.mu.html#L640'>check-screen-row-in-color</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">0</span>, <span class="Constant">1</span>, <span class="Constant">&quot;a c&quot;</span>, <span class="Constant">&quot;F - test-check-screen-color&quot;</span>
-<span id="L1098" class="LineNr">1098 </span><span class="Delimiter">}</span>
-<span id="L1099" class="LineNr">1099 </span>
-<span id="L1100" class="LineNr">1100 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1100'>test-check-screen-background-color</a></span> <span class="Delimiter">{</span>
-<span id="L1101" class="LineNr">1101 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1102" class="LineNr">1102 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L1103" class="LineNr">1103 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
-<span id="L1104" class="LineNr">1104 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
-<span id="L1105" class="LineNr">1105 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1106" class="LineNr">1106 </span>  <a href='405screen.mu.html#L464'>start-color</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">0</span>, <span class="Constant">1</span>  <span class="Comment"># background=1</span>
-<span id="L1107" class="LineNr">1107 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x62</span>  <span class="Comment"># 'b'</span>
-<span id="L1108" class="LineNr">1108 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1109" class="LineNr">1109 </span>  <a href='405screen.mu.html#L464'>start-color</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">0</span>, <span class="Constant">7</span>  <span class="Comment"># back to default</span>
-<span id="L1110" class="LineNr">1110 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x63</span>  <span class="Comment"># 'c'</span>
-<span id="L1111" class="LineNr">1111 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1112" class="LineNr">1112 </span>  <a href='405screen.mu.html#L687'>check-screen-row-in-background-color</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">7</span>, <span class="Constant">1</span>, <span class="Constant">&quot;a c&quot;</span>, <span class="Constant">&quot;F - test-check-screen-background-color&quot;</span>
-<span id="L1113" class="LineNr">1113 </span><span class="Delimiter">}</span>
-<span id="L1114" class="LineNr">1114 </span>
-<span id="L1115" class="LineNr">1115 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1115'>test-check-screen-bold</a></span> <span class="Delimiter">{</span>
-<span id="L1116" class="LineNr">1116 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1117" class="LineNr">1117 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L1118" class="LineNr">1118 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
-<span id="L1119" class="LineNr">1119 </span>  <a href='405screen.mu.html#L487'>start-bold</a> <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1120" class="LineNr">1120 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
-<span id="L1121" class="LineNr">1121 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1122" class="LineNr">1122 </span>  <a href='405screen.mu.html#L442'>reset-formatting</a> <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1123" class="LineNr">1123 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x62</span>  <span class="Comment"># 'b'</span>
-<span id="L1124" class="LineNr">1124 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1125" class="LineNr">1125 </span>  <a href='405screen.mu.html#L487'>start-bold</a> <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1126" class="LineNr">1126 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x63</span>  <span class="Comment"># 'c'</span>
-<span id="L1127" class="LineNr">1127 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1128" class="LineNr">1128 </span>  <a href='405screen.mu.html#L732'>check-screen-row-in-bold</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;a c&quot;</span>, <span class="Constant">&quot;F - test-check-screen-bold&quot;</span>
-<span id="L1129" class="LineNr">1129 </span><span class="Delimiter">}</span>
-<span id="L1130" class="LineNr">1130 </span>
-<span id="L1131" class="LineNr">1131 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1131'>test-check-screen-underline</a></span> <span class="Delimiter">{</span>
-<span id="L1132" class="LineNr">1132 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1133" class="LineNr">1133 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L1134" class="LineNr">1134 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
-<span id="L1135" class="LineNr">1135 </span>  <a href='405screen.mu.html#L506'>start-underline</a> <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1136" class="LineNr">1136 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
-<span id="L1137" class="LineNr">1137 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1138" class="LineNr">1138 </span>  <a href='405screen.mu.html#L442'>reset-formatting</a> <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1139" class="LineNr">1139 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x62</span>  <span class="Comment"># 'b'</span>
-<span id="L1140" class="LineNr">1140 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1141" class="LineNr">1141 </span>  <a href='405screen.mu.html#L506'>start-underline</a> <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1142" class="LineNr">1142 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x63</span>  <span class="Comment"># 'c'</span>
-<span id="L1143" class="LineNr">1143 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1144" class="LineNr">1144 </span>  <a href='405screen.mu.html#L778'>check-screen-row-in-underline</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;a c&quot;</span>, <span class="Constant">&quot;F - test-check-screen-underline&quot;</span>
-<span id="L1145" class="LineNr">1145 </span><span class="Delimiter">}</span>
-<span id="L1146" class="LineNr">1146 </span>
-<span id="L1147" class="LineNr">1147 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1147'>test-check-screen-reverse</a></span> <span class="Delimiter">{</span>
-<span id="L1148" class="LineNr">1148 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1149" class="LineNr">1149 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
-<span id="L1150" class="LineNr">1150 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
-<span id="L1151" class="LineNr">1151 </span>  <a href='405screen.mu.html#L525'>start-reverse-video</a> <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1152" class="LineNr">1152 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
-<span id="L1153" class="LineNr">1153 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1154" class="LineNr">1154 </span>  <a href='405screen.mu.html#L442'>reset-formatting</a> <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1155" class="LineNr">1155 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x62</span>  <span class="Comment"># 'b'</span>
-<span id="L1156" class="LineNr">1156 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1157" class="LineNr">1157 </span>  <a href='405screen.mu.html#L525'>start-reverse-video</a> <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1158" class="LineNr">1158 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x63</span>  <span class="Comment"># 'c'</span>
+<span id="L995" class="LineNr"> 995 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L995'>check-screen-row-in-reverse-from</a></span> screen-on-stack: (addr <a href='405screen.mu.html#L9'>screen</a>), row-idx: int, col-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
+<span id="L996" class="LineNr"> 996 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> copy screen-on-stack
+<span id="L997" class="LineNr"> 997 </span>  <span class="PreProc">var</span> idx/<span class="Constant">ecx</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L281'>screen-cell-index</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, col-idx
+<span id="L998" class="LineNr"> 998 </span>  <span class="Comment"># compare 'expected' with the screen contents starting at 'idx', grapheme by grapheme</span>
+<span id="L999" class="LineNr"> 999 </span>  <span class="PreProc">var</span> e: (stream byte <span class="Constant">0x100</span>)
+<span id="L1000" class="LineNr">1000 </span>  <span class="PreProc">var</span> e-addr/<span class="Constant">edx</span>: (addr stream byte) <span class="SpecialChar">&lt;-</span> address e
+<span id="L1001" class="LineNr">1001 </span>  <a href='108write.subx.html#L24'>write</a> e-addr, expected
+<span id="L1002" class="LineNr">1002 </span>  <span class="Delimiter">{</span>
+<span id="L1003" class="LineNr">1003 </span>    <span class="PreProc">var</span> done?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='309stream.subx.html#L6'>stream-empty?</a> e-addr
+<span id="L1004" class="LineNr">1004 </span>    compare done?, <span class="Constant">0</span>
+<span id="L1005" class="LineNr">1005 </span>    <span class="PreProc">break-if-!=</span>
+<span id="L1006" class="LineNr">1006 </span>    <span class="PreProc">var</span> _g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L309'>screen-grapheme-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
+<span id="L1007" class="LineNr">1007 </span>    <span class="PreProc">var</span> g/<span class="Constant">ebx</span>: grapheme <span class="SpecialChar">&lt;-</span> copy _g
+<span id="L1008" class="LineNr">1008 </span>    <span class="PreProc">var</span> _expected-grapheme/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='403unicode.mu.html#L160'>read-grapheme</a> e-addr
+<span id="L1009" class="LineNr">1009 </span>    <span class="PreProc">var</span> expected-grapheme/<span class="Constant">edx</span>: grapheme <span class="SpecialChar">&lt;-</span> copy _expected-grapheme
+<span id="L1010" class="LineNr">1010 </span>    $check-screen-row-in-reverse-from:compare-cells: <span class="Delimiter">{</span>
+<span id="L1011" class="LineNr">1011 </span>      <span class="Comment"># if expected-grapheme is space, null grapheme is also ok</span>
+<span id="L1012" class="LineNr">1012 </span>      <span class="Delimiter">{</span>
+<span id="L1013" class="LineNr">1013 </span>        compare expected-grapheme, <span class="Constant">0x20</span>
+<span id="L1014" class="LineNr">1014 </span>        <span class="PreProc">break-if-!=</span>
+<span id="L1015" class="LineNr">1015 </span>        compare g, <span class="Constant">0</span>
+<span id="L1016" class="LineNr">1016 </span>        <span class="PreProc">break-if-=</span> $check-screen-row-in-reverse-from:compare-cells
+<span id="L1017" class="LineNr">1017 </span>      <span class="Delimiter">}</span>
+<span id="L1018" class="LineNr">1018 </span>      <span class="Comment"># if expected-grapheme is space, non-reverse is ok</span>
+<span id="L1019" class="LineNr">1019 </span>      <span class="Delimiter">{</span>
+<span id="L1020" class="LineNr">1020 </span>        compare expected-grapheme, <span class="Constant">0x20</span>
+<span id="L1021" class="LineNr">1021 </span>        <span class="PreProc">break-if-!=</span>
+<span id="L1022" class="LineNr">1022 </span>        <span class="PreProc">var</span> reverse?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L394'>screen-reverse-at-idx?</a> <a href='405screen.mu.html#L9'>screen</a>, idx
+<span id="L1023" class="LineNr">1023 </span>        compare reverse?, <span class="Constant">1</span>
+<span id="L1024" class="LineNr">1024 </span>        <span class="PreProc">break-if-!=</span> $check-screen-row-in-reverse-from:compare-cells
+<span id="L1025" class="LineNr">1025 </span>      <span class="Delimiter">}</span>
+<span id="L1026" class="LineNr">1026 </span>      <span class="Comment"># compare graphemes</span>
+<span id="L1027" class="LineNr">1027 </span>      $check-screen-row-in-reverse-from:compare-graphemes: <span class="Delimiter">{</span>
+<span id="L1028" class="LineNr">1028 </span>        <span class="Comment"># if (g == expected-grapheme) print &quot;.&quot;</span>
+<span id="L1029" class="LineNr">1029 </span>        compare g, expected-grapheme
+<span id="L1030" class="LineNr">1030 </span>        <span class="Delimiter">{</span>
+<span id="L1031" class="LineNr">1031 </span>          <span class="PreProc">break-if-!=</span>
+<span id="L1032" class="LineNr">1032 </span>          <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;.&quot;</span>
+<span id="L1033" class="LineNr">1033 </span>          <span class="PreProc">break</span> $check-screen-row-in-reverse-from:compare-graphemes
+<span id="L1034" class="LineNr">1034 </span>        <span class="Delimiter">}</span>
+<span id="L1035" class="LineNr">1035 </span>        <span class="Comment"># otherwise print an error</span>
+<span id="L1036" class="LineNr">1036 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> msg
+<span id="L1037" class="LineNr">1037 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;: expected '&quot;</span>
+<span id="L1038" class="LineNr">1038 </span>        <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> expected-grapheme
+<span id="L1039" class="LineNr">1039 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;' at (&quot;</span>
+<span id="L1040" class="LineNr">1040 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> row-idx
+<span id="L1041" class="LineNr">1041 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;, &quot;</span>
+<span id="L1042" class="LineNr">1042 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> col-idx
+<span id="L1043" class="LineNr">1043 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;) but observed '&quot;</span>
+<span id="L1044" class="LineNr">1044 </span>        <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> g
+<span id="L1045" class="LineNr">1045 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;'\n&quot;</span>
+<span id="L1046" class="LineNr">1046 </span>      <span class="Delimiter">}</span>
+<span id="L1047" class="LineNr">1047 </span>      $check-screen-row-in-reverse-from:compare-reverse: <span class="Delimiter">{</span>
+<span id="L1048" class="LineNr">1048 </span>        <span class="PreProc">var</span> reverse?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L394'>screen-reverse-at-idx?</a> <a href='405screen.mu.html#L9'>screen</a>, idx
+<span id="L1049" class="LineNr">1049 </span>        compare reverse?, <span class="Constant">1</span>
+<span id="L1050" class="LineNr">1050 </span>        <span class="Delimiter">{</span>
+<span id="L1051" class="LineNr">1051 </span>          <span class="PreProc">break-if-!=</span>
+<span id="L1052" class="LineNr">1052 </span>          <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;.&quot;</span>
+<span id="L1053" class="LineNr">1053 </span>          <span class="PreProc">break</span> $check-screen-row-in-reverse-from:compare-reverse
+<span id="L1054" class="LineNr">1054 </span>        <span class="Delimiter">}</span>
+<span id="L1055" class="LineNr">1055 </span>        <span class="Comment"># otherwise print an error</span>
+<span id="L1056" class="LineNr">1056 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> msg
+<span id="L1057" class="LineNr">1057 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;: expected '&quot;</span>
+<span id="L1058" class="LineNr">1058 </span>        <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> expected-grapheme
+<span id="L1059" class="LineNr">1059 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;' at (&quot;</span>
+<span id="L1060" class="LineNr">1060 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> row-idx
+<span id="L1061" class="LineNr">1061 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;, &quot;</span>
+<span id="L1062" class="LineNr">1062 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> col-idx
+<span id="L1063" class="LineNr">1063 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;) to be in reverse-video\n&quot;</span>
+<span id="L1064" class="LineNr">1064 </span>      <span class="Delimiter">}</span>
+<span id="L1065" class="LineNr">1065 </span>    <span class="Delimiter">}</span>
+<span id="L1066" class="LineNr">1066 </span>    idx <span class="SpecialChar">&lt;-</span> increment
+<span id="L1067" class="LineNr">1067 </span>    increment col-idx
+<span id="L1068" class="LineNr">1068 </span>    <span class="PreProc">loop</span>
+<span id="L1069" class="LineNr">1069 </span>  <span class="Delimiter">}</span>
+<span id="L1070" class="LineNr">1070 </span><span class="Delimiter">}</span>
+<span id="L1071" class="LineNr">1071 </span>
+<span id="L1072" class="LineNr">1072 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L1072'>check-screen-row-in-blinking</a></span> <a href='405screen.mu.html#L9'>screen</a>: (addr <a href='405screen.mu.html#L9'>screen</a>), row-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
+<span id="L1073" class="LineNr">1073 </span>  <a href='405screen.mu.html#L1076'>check-screen-row-in-blinking-from</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, <span class="Constant">1</span>, expected, msg
+<span id="L1074" class="LineNr">1074 </span><span class="Delimiter">}</span>
+<span id="L1075" class="LineNr">1075 </span>
+<span id="L1076" class="LineNr">1076 </span><span class="PreProc">fn</span> <span class="muFunction"><a href='405screen.mu.html#L1076'>check-screen-row-in-blinking-from</a></span> screen-on-stack: (addr <a href='405screen.mu.html#L9'>screen</a>), row-idx: int, col-idx: int, expected: (addr array byte), msg: (addr array byte) <span class="Delimiter">{</span>
+<span id="L1077" class="LineNr">1077 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> copy screen-on-stack
+<span id="L1078" class="LineNr">1078 </span>  <span class="PreProc">var</span> idx/<span class="Constant">ecx</span>: int <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L281'>screen-cell-index</a> <a href='405screen.mu.html#L9'>screen</a>, row-idx, col-idx
+<span id="L1079" class="LineNr">1079 </span>  <span class="Comment"># compare 'expected' with the screen contents starting at 'idx', grapheme by grapheme</span>
+<span id="L1080" class="LineNr">1080 </span>  <span class="PreProc">var</span> e: (stream byte <span class="Constant">0x100</span>)
+<span id="L1081" class="LineNr">1081 </span>  <span class="PreProc">var</span> e-addr/<span class="Constant">edx</span>: (addr stream byte) <span class="SpecialChar">&lt;-</span> address e
+<span id="L1082" class="LineNr">1082 </span>  <a href='108write.subx.html#L24'>write</a> e-addr, expected
+<span id="L1083" class="LineNr">1083 </span>  <span class="Delimiter">{</span>
+<span id="L1084" class="LineNr">1084 </span>    <span class="PreProc">var</span> done?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='309stream.subx.html#L6'>stream-empty?</a> e-addr
+<span id="L1085" class="LineNr">1085 </span>    compare done?, <span class="Constant">0</span>
+<span id="L1086" class="LineNr">1086 </span>    <span class="PreProc">break-if-!=</span>
+<span id="L1087" class="LineNr">1087 </span>    <span class="PreProc">var</span> _g/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L309'>screen-grapheme-at-idx</a> <a href='405screen.mu.html#L9'>screen</a>, idx
+<span id="L1088" class="LineNr">1088 </span>    <span class="PreProc">var</span> g/<span class="Constant">ebx</span>: grapheme <span class="SpecialChar">&lt;-</span> copy _g
+<span id="L1089" class="LineNr">1089 </span>    <span class="PreProc">var</span> _expected-grapheme/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> <a href='403unicode.mu.html#L160'>read-grapheme</a> e-addr
+<span id="L1090" class="LineNr">1090 </span>    <span class="PreProc">var</span> expected-grapheme/<span class="Constant">edx</span>: grapheme <span class="SpecialChar">&lt;-</span> copy _expected-grapheme
+<span id="L1091" class="LineNr">1091 </span>    $check-screen-row-in-blinking-from:compare-cells: <span class="Delimiter">{</span>
+<span id="L1092" class="LineNr">1092 </span>      <span class="Comment"># if expected-grapheme is space, null grapheme is also ok</span>
+<span id="L1093" class="LineNr">1093 </span>      <span class="Delimiter">{</span>
+<span id="L1094" class="LineNr">1094 </span>        compare expected-grapheme, <span class="Constant">0x20</span>
+<span id="L1095" class="LineNr">1095 </span>        <span class="PreProc">break-if-!=</span>
+<span id="L1096" class="LineNr">1096 </span>        compare g, <span class="Constant">0</span>
+<span id="L1097" class="LineNr">1097 </span>        <span class="PreProc">break-if-=</span> $check-screen-row-in-blinking-from:compare-cells
+<span id="L1098" class="LineNr">1098 </span>      <span class="Delimiter">}</span>
+<span id="L1099" class="LineNr">1099 </span>      <span class="Comment"># if expected-grapheme is space, non-blinking is ok</span>
+<span id="L1100" class="LineNr">1100 </span>      <span class="Delimiter">{</span>
+<span id="L1101" class="LineNr">1101 </span>        compare expected-grapheme, <span class="Constant">0x20</span>
+<span id="L1102" class="LineNr">1102 </span>        <span class="PreProc">break-if-!=</span>
+<span id="L1103" class="LineNr">1103 </span>        <span class="PreProc">var</span> blinking?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L411'>screen-blink-at-idx?</a> <a href='405screen.mu.html#L9'>screen</a>, idx
+<span id="L1104" class="LineNr">1104 </span>        compare blinking?, <span class="Constant">1</span>
+<span id="L1105" class="LineNr">1105 </span>        <span class="PreProc">break-if-!=</span> $check-screen-row-in-blinking-from:compare-cells
+<span id="L1106" class="LineNr">1106 </span>      <span class="Delimiter">}</span>
+<span id="L1107" class="LineNr">1107 </span>      <span class="Comment"># compare graphemes</span>
+<span id="L1108" class="LineNr">1108 </span>      $check-screen-row-in-blinking-from:compare-graphemes: <span class="Delimiter">{</span>
+<span id="L1109" class="LineNr">1109 </span>        <span class="Comment"># if (g == expected-grapheme) print &quot;.&quot;</span>
+<span id="L1110" class="LineNr">1110 </span>        compare g, expected-grapheme
+<span id="L1111" class="LineNr">1111 </span>        <span class="Delimiter">{</span>
+<span id="L1112" class="LineNr">1112 </span>          <span class="PreProc">break-if-!=</span>
+<span id="L1113" class="LineNr">1113 </span>          <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;.&quot;</span>
+<span id="L1114" class="LineNr">1114 </span>          <span class="PreProc">break</span> $check-screen-row-in-blinking-from:compare-graphemes
+<span id="L1115" class="LineNr">1115 </span>        <span class="Delimiter">}</span>
+<span id="L1116" class="LineNr">1116 </span>        <span class="Comment"># otherwise print an error</span>
+<span id="L1117" class="LineNr">1117 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> msg
+<span id="L1118" class="LineNr">1118 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;: expected '&quot;</span>
+<span id="L1119" class="LineNr">1119 </span>        <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> expected-grapheme
+<span id="L1120" class="LineNr">1120 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;' at (&quot;</span>
+<span id="L1121" class="LineNr">1121 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> row-idx
+<span id="L1122" class="LineNr">1122 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;, &quot;</span>
+<span id="L1123" class="LineNr">1123 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> col-idx
+<span id="L1124" class="LineNr">1124 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;) but observed '&quot;</span>
+<span id="L1125" class="LineNr">1125 </span>        <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> g
+<span id="L1126" class="LineNr">1126 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;'\n&quot;</span>
+<span id="L1127" class="LineNr">1127 </span>      <span class="Delimiter">}</span>
+<span id="L1128" class="LineNr">1128 </span>      $check-screen-row-in-blinking-from:compare-blinking: <span class="Delimiter">{</span>
+<span id="L1129" class="LineNr">1129 </span>        <span class="PreProc">var</span> blinking?/<span class="Constant">eax</span>: boolean <span class="SpecialChar">&lt;-</span> <a href='405screen.mu.html#L411'>screen-blink-at-idx?</a> <a href='405screen.mu.html#L9'>screen</a>, idx
+<span id="L1130" class="LineNr">1130 </span>        compare blinking?, <span class="Constant">1</span>
+<span id="L1131" class="LineNr">1131 </span>        <span class="Delimiter">{</span>
+<span id="L1132" class="LineNr">1132 </span>          <span class="PreProc">break-if-!=</span>
+<span id="L1133" class="LineNr">1133 </span>          <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;.&quot;</span>
+<span id="L1134" class="LineNr">1134 </span>          <span class="PreProc">break</span> $check-screen-row-in-blinking-from:compare-blinking
+<span id="L1135" class="LineNr">1135 </span>        <span class="Delimiter">}</span>
+<span id="L1136" class="LineNr">1136 </span>        <span class="Comment"># otherwise print an error</span>
+<span id="L1137" class="LineNr">1137 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> msg
+<span id="L1138" class="LineNr">1138 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;: expected '&quot;</span>
+<span id="L1139" class="LineNr">1139 </span>        <a href='304screen.subx.html#L148'>print-grapheme-to-real-screen</a> expected-grapheme
+<span id="L1140" class="LineNr">1140 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;' at (&quot;</span>
+<span id="L1141" class="LineNr">1141 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> row-idx
+<span id="L1142" class="LineNr">1142 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;, &quot;</span>
+<span id="L1143" class="LineNr">1143 </span>        <a href='304screen.subx.html#L213'>print-int32-hex-to-real-screen</a> col-idx
+<span id="L1144" class="LineNr">1144 </span>        <a href='304screen.subx.html#L122'>print-string-to-real-screen</a> <span class="Constant">&quot;) to be blinking\n&quot;</span>
+<span id="L1145" class="LineNr">1145 </span>      <span class="Delimiter">}</span>
+<span id="L1146" class="LineNr">1146 </span>    <span class="Delimiter">}</span>
+<span id="L1147" class="LineNr">1147 </span>    idx <span class="SpecialChar">&lt;-</span> increment
+<span id="L1148" class="LineNr">1148 </span>    increment col-idx
+<span id="L1149" class="LineNr">1149 </span>
+<span id="L1150" class="LineNr">1150 </span>    <span class="PreProc">loop</span>
+<span id="L1151" class="LineNr">1151 </span>  <span class="Delimiter">}</span>
+<span id="L1152" class="LineNr">1152 </span><span class="Delimiter">}</span>
+<span id="L1153" class="LineNr">1153 </span>
+<span id="L1154" class="LineNr">1154 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1154'>test-print-single-grapheme</a></span> <span class="Delimiter">{</span>
+<span id="L1155" class="LineNr">1155 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1156" class="LineNr">1156 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1157" class="LineNr">1157 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
+<span id="L1158" class="LineNr">1158 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
 <span id="L1159" class="LineNr">1159 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1160" class="LineNr">1160 </span>  <a href='405screen.mu.html#L824'>check-screen-row-in-reverse</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;a c&quot;</span>, <span class="Constant">&quot;F - test-check-screen-reverse&quot;</span>
+<span id="L1160" class="LineNr">1160 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - test-print-single-grapheme&quot;</span>  <span class="Comment"># top-left corner of the screen</span>
 <span id="L1161" class="LineNr">1161 </span><span class="Delimiter">}</span>
 <span id="L1162" class="LineNr">1162 </span>
-<span id="L1163" class="LineNr">1163 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1163'>test-check-screen-blinking</a></span> <span class="Delimiter">{</span>
+<span id="L1163" class="LineNr">1163 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1163'>test-print-multiple-graphemes</a></span> <span class="Delimiter">{</span>
 <span id="L1164" class="LineNr">1164 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
 <span id="L1165" class="LineNr">1165 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
 <span id="L1166" class="LineNr">1166 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
-<span id="L1167" class="LineNr">1167 </span>  <a href='405screen.mu.html#L544'>start-blinking</a> <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1168" class="LineNr">1168 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
-<span id="L1169" class="LineNr">1169 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1170" class="LineNr">1170 </span>  <a href='405screen.mu.html#L442'>reset-formatting</a> <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1171" class="LineNr">1171 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x62</span>  <span class="Comment"># 'b'</span>
-<span id="L1172" class="LineNr">1172 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1173" class="LineNr">1173 </span>  <a href='405screen.mu.html#L544'>start-blinking</a> <a href='405screen.mu.html#L9'>screen</a>
-<span id="L1174" class="LineNr">1174 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x63</span>  <span class="Comment"># 'c'</span>
-<span id="L1175" class="LineNr">1175 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
-<span id="L1176" class="LineNr">1176 </span>  <a href='405screen.mu.html#L870'>check-screen-row-in-blinking</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;a c&quot;</span>, <span class="Constant">&quot;F - test-check-screen-blinking&quot;</span>
-<span id="L1177" class="LineNr">1177 </span><span class="Delimiter">}</span>
-<span id="L1178" class="LineNr">1178 </span>
-<span id="L1179" class="LineNr">1179 </span><span class="CommentedCode">#? fn main -&gt; exit-status/ebx: int {</span>
-<span id="L1180" class="LineNr">1180 </span><span class="CommentedCode">#? #?   test-check-screen-color</span>
-<span id="L1181" class="LineNr">1181 </span><span class="CommentedCode">#?   run-tests</span>
-<span id="L1182" class="LineNr">1182 </span><span class="CommentedCode">#?   exit-status &lt;- copy 0</span>
-<span id="L1183" class="LineNr">1183 </span><span class="CommentedCode">#? }</span>
+<span id="L1167" class="LineNr">1167 </span>  <a href='405screen.mu.html#L179'>print-string</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">&quot;Hello, 世界&quot;</span>
+<span id="L1168" class="LineNr">1168 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;Hello, 世界&quot;</span>, <span class="Constant">&quot;F - test-print-multiple-graphemes&quot;</span>
+<span id="L1169" class="LineNr">1169 </span><span class="Delimiter">}</span>
+<span id="L1170" class="LineNr">1170 </span>
+<span id="L1171" class="LineNr">1171 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1171'>test-move-cursor</a></span> <span class="Delimiter">{</span>
+<span id="L1172" class="LineNr">1172 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1173" class="LineNr">1173 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1174" class="LineNr">1174 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
+<span id="L1175" class="LineNr">1175 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">4</span>
+<span id="L1176" class="LineNr">1176 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
+<span id="L1177" class="LineNr">1177 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1178" class="LineNr">1178 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;   a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor&quot;</span>  <span class="Comment"># top row</span>
+<span id="L1179" class="LineNr">1179 </span><span class="Delimiter">}</span>
+<span id="L1180" class="LineNr">1180 </span>
+<span id="L1181" class="LineNr">1181 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1181'>test-move-cursor-zeroes</a></span> <span class="Delimiter">{</span>
+<span id="L1182" class="LineNr">1182 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1183" class="LineNr">1183 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1184" class="LineNr">1184 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
+<span id="L1185" class="LineNr">1185 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">0</span>, <span class="Constant">0</span>
+<span id="L1186" class="LineNr">1186 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
+<span id="L1187" class="LineNr">1187 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1188" class="LineNr">1188 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor-zeroes&quot;</span>  <span class="Comment"># top-left corner of the screen</span>
+<span id="L1189" class="LineNr">1189 </span><span class="Delimiter">}</span>
+<span id="L1190" class="LineNr">1190 </span>
+<span id="L1191" class="LineNr">1191 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1191'>test-move-cursor-zero-row</a></span> <span class="Delimiter">{</span>
+<span id="L1192" class="LineNr">1192 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1193" class="LineNr">1193 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1194" class="LineNr">1194 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
+<span id="L1195" class="LineNr">1195 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">0</span>, <span class="Constant">2</span>
+<span id="L1196" class="LineNr">1196 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
+<span id="L1197" class="LineNr">1197 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1198" class="LineNr">1198 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot; a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor-zero-row&quot;</span>  <span class="Comment"># top row</span>
+<span id="L1199" class="LineNr">1199 </span><span class="Delimiter">}</span>
+<span id="L1200" class="LineNr">1200 </span>
+<span id="L1201" class="LineNr">1201 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1201'>test-move-cursor-zero-column</a></span> <span class="Delimiter">{</span>
+<span id="L1202" class="LineNr">1202 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1203" class="LineNr">1203 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1204" class="LineNr">1204 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
+<span id="L1205" class="LineNr">1205 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">4</span>, <span class="Constant">0</span>
+<span id="L1206" class="LineNr">1206 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
+<span id="L1207" class="LineNr">1207 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1208" class="LineNr">1208 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">4</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor-zero-column&quot;</span>
+<span id="L1209" class="LineNr">1209 </span><span class="Delimiter">}</span>
+<span id="L1210" class="LineNr">1210 </span>
+<span id="L1211" class="LineNr">1211 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1211'>test-move-cursor-negative-row</a></span> <span class="Delimiter">{</span>
+<span id="L1212" class="LineNr">1212 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1213" class="LineNr">1213 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1214" class="LineNr">1214 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">3</span>
+<span id="L1215" class="LineNr">1215 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">-1</span>, <span class="Constant">2</span>  <span class="Comment"># row -1</span>
+<span id="L1216" class="LineNr">1216 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
+<span id="L1217" class="LineNr">1217 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1218" class="LineNr">1218 </span>  <span class="Comment"># no move</span>
+<span id="L1219" class="LineNr">1219 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor-negative-row&quot;</span>
+<span id="L1220" class="LineNr">1220 </span><span class="Delimiter">}</span>
+<span id="L1221" class="LineNr">1221 </span>
+<span id="L1222" class="LineNr">1222 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1222'>test-move-cursor-negative-column</a></span> <span class="Delimiter">{</span>
+<span id="L1223" class="LineNr">1223 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1224" class="LineNr">1224 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1225" class="LineNr">1225 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">3</span>
+<span id="L1226" class="LineNr">1226 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">2</span>, <span class="Constant">-1</span>  <span class="Comment"># column -1</span>
+<span id="L1227" class="LineNr">1227 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
+<span id="L1228" class="LineNr">1228 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1229" class="LineNr">1229 </span>  <span class="Comment"># no move</span>
+<span id="L1230" class="LineNr">1230 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor-negative-column&quot;</span>
+<span id="L1231" class="LineNr">1231 </span><span class="Delimiter">}</span>
+<span id="L1232" class="LineNr">1232 </span>
+<span id="L1233" class="LineNr">1233 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1233'>test-move-cursor-column-too-large</a></span> <span class="Delimiter">{</span>
+<span id="L1234" class="LineNr">1234 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1235" class="LineNr">1235 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1236" class="LineNr">1236 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">3</span>  <span class="Comment"># 5 rows, 3 columns</span>
+<span id="L1237" class="LineNr">1237 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">4</span>  <span class="Comment"># row 1, column 4 (overflow)</span>
+<span id="L1238" class="LineNr">1238 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
+<span id="L1239" class="LineNr">1239 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1240" class="LineNr">1240 </span>  <span class="Comment"># top row is empty</span>
+<span id="L1241" class="LineNr">1241 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;   &quot;</span>, <span class="Constant">&quot;F - test-move-cursor-column-too-large&quot;</span>
+<span id="L1242" class="LineNr">1242 </span>  <span class="Comment"># character shows up on next row</span>
+<span id="L1243" class="LineNr">1243 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">2</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor-column-too-large&quot;</span>
+<span id="L1244" class="LineNr">1244 </span><span class="Delimiter">}</span>
+<span id="L1245" class="LineNr">1245 </span>
+<span id="L1246" class="LineNr">1246 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1246'>test-move-cursor-column-too-large-saturates</a></span> <span class="Delimiter">{</span>
+<span id="L1247" class="LineNr">1247 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1248" class="LineNr">1248 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1249" class="LineNr">1249 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">3</span>  <span class="Comment"># 5 rows, 3 columns</span>
+<span id="L1250" class="LineNr">1250 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">6</span>  <span class="Comment"># row 1, column 6 (overflow)</span>
+<span id="L1251" class="LineNr">1251 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
+<span id="L1252" class="LineNr">1252 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1253" class="LineNr">1253 </span>  <span class="Comment"># top row is empty</span>
+<span id="L1254" class="LineNr">1254 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;   &quot;</span>, <span class="Constant">&quot;F - test-move-cursor-column-too-large-saturates&quot;</span>  <span class="Comment"># top-left corner of the screen</span>
+<span id="L1255" class="LineNr">1255 </span>  <span class="Comment"># character shows up at the start of next row</span>
+<span id="L1256" class="LineNr">1256 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">2</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor-column-too-large-saturates&quot;</span>  <span class="Comment"># top-left corner of the screen</span>
+<span id="L1257" class="LineNr">1257 </span><span class="Delimiter">}</span>
+<span id="L1258" class="LineNr">1258 </span>
+<span id="L1259" class="LineNr">1259 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1259'>test-move-cursor-row-too-large</a></span> <span class="Delimiter">{</span>
+<span id="L1260" class="LineNr">1260 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1261" class="LineNr">1261 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1262" class="LineNr">1262 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">3</span>  <span class="Comment"># 5 rows</span>
+<span id="L1263" class="LineNr">1263 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">6</span>, <span class="Constant">2</span>  <span class="Comment"># row 6 (overflow)</span>
+<span id="L1264" class="LineNr">1264 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
+<span id="L1265" class="LineNr">1265 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1266" class="LineNr">1266 </span>  <span class="Comment"># bottom row shows the character</span>
+<span id="L1267" class="LineNr">1267 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">&quot; a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor-row-too-large&quot;</span>
+<span id="L1268" class="LineNr">1268 </span><span class="Delimiter">}</span>
+<span id="L1269" class="LineNr">1269 </span>
+<span id="L1270" class="LineNr">1270 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1270'>test-move-cursor-row-too-large-saturates</a></span> <span class="Delimiter">{</span>
+<span id="L1271" class="LineNr">1271 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1272" class="LineNr">1272 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1273" class="LineNr">1273 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">3</span>  <span class="Comment"># 5 rows</span>
+<span id="L1274" class="LineNr">1274 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">9</span>, <span class="Constant">2</span>  <span class="Comment"># row 9 (overflow)</span>
+<span id="L1275" class="LineNr">1275 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
+<span id="L1276" class="LineNr">1276 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1277" class="LineNr">1277 </span>  <span class="Comment"># bottom row shows the character</span>
+<span id="L1278" class="LineNr">1278 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">&quot; a&quot;</span>, <span class="Constant">&quot;F - test-move-cursor-row-too-large-saturates&quot;</span>
+<span id="L1279" class="LineNr">1279 </span><span class="Delimiter">}</span>
+<span id="L1280" class="LineNr">1280 </span>
+<span id="L1281" class="LineNr">1281 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1281'>test-check-screen-row-from</a></span> <span class="Delimiter">{</span>
+<span id="L1282" class="LineNr">1282 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1283" class="LineNr">1283 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1284" class="LineNr">1284 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
+<span id="L1285" class="LineNr">1285 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">4</span>
+<span id="L1286" class="LineNr">1286 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
+<span id="L1287" class="LineNr">1287 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1288" class="LineNr">1288 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;   a&quot;</span>, <span class="Constant">&quot;F - <a href='405screen.mu.html#L1281'>test-check-screen-row-from</a>/baseline&quot;</span>
+<span id="L1289" class="LineNr">1289 </span>  <a href='405screen.mu.html#L607'>check-screen-row-from</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">4</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - test-check-screen-row-from&quot;</span>
+<span id="L1290" class="LineNr">1290 </span><span class="Delimiter">}</span>
+<span id="L1291" class="LineNr">1291 </span>
+<span id="L1292" class="LineNr">1292 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1292'>test-print-string-overflows-to-next-row</a></span> <span class="Delimiter">{</span>
+<span id="L1293" class="LineNr">1293 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1294" class="LineNr">1294 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1295" class="LineNr">1295 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>  <span class="Comment"># 5 rows, 4 columns</span>
+<span id="L1296" class="LineNr">1296 </span>  <a href='405screen.mu.html#L179'>print-string</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">&quot;abcdefg&quot;</span>
+<span id="L1297" class="LineNr">1297 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;abcd&quot;</span>, <span class="Constant">&quot;F - test-print-string-overflows-to-next-row&quot;</span>
+<span id="L1298" class="LineNr">1298 </span>  <a href='405screen.mu.html#L603'>check-screen-row</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">2</span>, <span class="Constant">&quot;efg&quot;</span>, <span class="Constant">&quot;F - test-print-string-overflows-to-next-row&quot;</span>
+<span id="L1299" class="LineNr">1299 </span><span class="Delimiter">}</span>
+<span id="L1300" class="LineNr">1300 </span>
+<span id="L1301" class="LineNr">1301 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1301'>test-check-screen-scrolls-on-overflow</a></span> <span class="Delimiter">{</span>
+<span id="L1302" class="LineNr">1302 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1303" class="LineNr">1303 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1304" class="LineNr">1304 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
+<span id="L1305" class="LineNr">1305 </span>  <span class="Comment"># single character starting at bottom right</span>
+<span id="L1306" class="LineNr">1306 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
+<span id="L1307" class="LineNr">1307 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
+<span id="L1308" class="LineNr">1308 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1309" class="LineNr">1309 </span>  <a href='405screen.mu.html#L607'>check-screen-row-from</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - <a href='405screen.mu.html#L1301'>test-check-screen-scrolls-on-overflow</a>/baseline&quot;</span>  <span class="Comment"># bottom-right corner of the screen</span>
+<span id="L1310" class="LineNr">1310 </span>  <span class="Comment"># multiple characters starting at bottom right</span>
+<span id="L1311" class="LineNr">1311 </span>  <a href='405screen.mu.html#L116'>move-cursor</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
+<span id="L1312" class="LineNr">1312 </span>  <a href='405screen.mu.html#L179'>print-string</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">&quot;ab&quot;</span>
+<span id="L1313" class="LineNr">1313 </span>  <span class="Comment"># screen scrolled up one row</span>
+<span id="L1314" class="LineNr">1314 </span><span class="CommentedCode">#?   check-screen-row screen, 1, &quot;    &quot;, &quot;F - test-check-screen-scrolls-on-overflow/x1&quot;</span>
+<span id="L1315" class="LineNr">1315 </span><span class="CommentedCode">#?   check-screen-row screen, 2, &quot;    &quot;, &quot;F - test-check-screen-scrolls-on-overflow/x2&quot;</span>
+<span id="L1316" class="LineNr">1316 </span><span class="CommentedCode">#?   check-screen-row screen, 3, &quot;    &quot;, &quot;F - test-check-screen-scrolls-on-overflow/x3&quot;</span>
+<span id="L1317" class="LineNr">1317 </span><span class="CommentedCode">#?   check-screen-row screen, 4, &quot;   a&quot;, &quot;F - test-check-screen-scrolls-on-overflow/x4&quot;</span>
+<span id="L1318" class="LineNr">1318 </span><span class="CommentedCode">#?   check-screen-row screen, 5, &quot;b   &quot;, &quot;F - test-check-screen-scrolls-on-overflow/x5&quot;</span>
+<span id="L1319" class="LineNr">1319 </span>  <a href='405screen.mu.html#L607'>check-screen-row-from</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">4</span>, <span class="Constant">4</span>, <span class="Constant">&quot;a&quot;</span>, <span class="Constant">&quot;F - <a href='405screen.mu.html#L1301'>test-check-screen-scrolls-on-overflow</a>/1&quot;</span>
+<span id="L1320" class="LineNr">1320 </span>  <a href='405screen.mu.html#L607'>check-screen-row-from</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">1</span>, <span class="Constant">&quot;b&quot;</span>, <span class="Constant">&quot;F - <a href='405screen.mu.html#L1301'>test-check-screen-scrolls-on-overflow</a>/2&quot;</span>
+<span id="L1321" class="LineNr">1321 </span><span class="Delimiter">}</span>
+<span id="L1322" class="LineNr">1322 </span>
+<span id="L1323" class="LineNr">1323 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1323'>test-check-screen-color</a></span> <span class="Delimiter">{</span>
+<span id="L1324" class="LineNr">1324 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1325" class="LineNr">1325 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1326" class="LineNr">1326 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
+<span id="L1327" class="LineNr">1327 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
+<span id="L1328" class="LineNr">1328 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1329" class="LineNr">1329 </span>  <a href='405screen.mu.html#L464'>start-color</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">0</span>  <span class="Comment"># foreground=1</span>
+<span id="L1330" class="LineNr">1330 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x62</span>  <span class="Comment"># 'b'</span>
+<span id="L1331" class="LineNr">1331 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1332" class="LineNr">1332 </span>  <a href='405screen.mu.html#L464'>start-color</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">0</span>, <span class="Constant">0</span>  <span class="Comment"># back to default</span>
+<span id="L1333" class="LineNr">1333 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x63</span>  <span class="Comment"># 'c'</span>
+<span id="L1334" class="LineNr">1334 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1335" class="LineNr">1335 </span>  <a href='405screen.mu.html#L657'>check-screen-row-in-color</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">0</span>, <span class="Constant">1</span>, <span class="Constant">&quot;a c&quot;</span>, <span class="Constant">&quot;F - test-check-screen-color&quot;</span>
+<span id="L1336" class="LineNr">1336 </span><span class="Delimiter">}</span>
+<span id="L1337" class="LineNr">1337 </span>
+<span id="L1338" class="LineNr">1338 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1338'>test-check-screen-background-color</a></span> <span class="Delimiter">{</span>
+<span id="L1339" class="LineNr">1339 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1340" class="LineNr">1340 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1341" class="LineNr">1341 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
+<span id="L1342" class="LineNr">1342 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
+<span id="L1343" class="LineNr">1343 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1344" class="LineNr">1344 </span>  <a href='405screen.mu.html#L464'>start-color</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">0</span>, <span class="Constant">1</span>  <span class="Comment"># background=1</span>
+<span id="L1345" class="LineNr">1345 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x62</span>  <span class="Comment"># 'b'</span>
+<span id="L1346" class="LineNr">1346 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1347" class="LineNr">1347 </span>  <a href='405screen.mu.html#L464'>start-color</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">0</span>, <span class="Constant">7</span>  <span class="Comment"># back to default</span>
+<span id="L1348" class="LineNr">1348 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x63</span>  <span class="Comment"># 'c'</span>
+<span id="L1349" class="LineNr">1349 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1350" class="LineNr">1350 </span>  <a href='405screen.mu.html#L744'>check-screen-row-in-background-color</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">7</span>, <span class="Constant">1</span>, <span class="Constant">&quot;a c&quot;</span>, <span class="Constant">&quot;F - test-check-screen-background-color&quot;</span>
+<span id="L1351" class="LineNr">1351 </span><span class="Delimiter">}</span>
+<span id="L1352" class="LineNr">1352 </span>
+<span id="L1353" class="LineNr">1353 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1353'>test-check-screen-bold</a></span> <span class="Delimiter">{</span>
+<span id="L1354" class="LineNr">1354 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1355" class="LineNr">1355 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1356" class="LineNr">1356 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
+<span id="L1357" class="LineNr">1357 </span>  <a href='405screen.mu.html#L487'>start-bold</a> <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1358" class="LineNr">1358 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
+<span id="L1359" class="LineNr">1359 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1360" class="LineNr">1360 </span>  <a href='405screen.mu.html#L442'>reset-formatting</a> <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1361" class="LineNr">1361 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x62</span>  <span class="Comment"># 'b'</span>
+<span id="L1362" class="LineNr">1362 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1363" class="LineNr">1363 </span>  <a href='405screen.mu.html#L487'>start-bold</a> <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1364" class="LineNr">1364 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x63</span>  <span class="Comment"># 'c'</span>
+<span id="L1365" class="LineNr">1365 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1366" class="LineNr">1366 </span>  <a href='405screen.mu.html#L829'>check-screen-row-in-bold</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;a c&quot;</span>, <span class="Constant">&quot;F - test-check-screen-bold&quot;</span>
+<span id="L1367" class="LineNr">1367 </span><span class="Delimiter">}</span>
+<span id="L1368" class="LineNr">1368 </span>
+<span id="L1369" class="LineNr">1369 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1369'>test-check-screen-underline</a></span> <span class="Delimiter">{</span>
+<span id="L1370" class="LineNr">1370 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1371" class="LineNr">1371 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1372" class="LineNr">1372 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
+<span id="L1373" class="LineNr">1373 </span>  <a href='405screen.mu.html#L506'>start-underline</a> <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1374" class="LineNr">1374 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
+<span id="L1375" class="LineNr">1375 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1376" class="LineNr">1376 </span>  <a href='405screen.mu.html#L442'>reset-formatting</a> <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1377" class="LineNr">1377 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x62</span>  <span class="Comment"># 'b'</span>
+<span id="L1378" class="LineNr">1378 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1379" class="LineNr">1379 </span>  <a href='405screen.mu.html#L506'>start-underline</a> <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1380" class="LineNr">1380 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x63</span>  <span class="Comment"># 'c'</span>
+<span id="L1381" class="LineNr">1381 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1382" class="LineNr">1382 </span>  <a href='405screen.mu.html#L910'>check-screen-row-in-underline</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;a c&quot;</span>, <span class="Constant">&quot;F - test-check-screen-underline&quot;</span>
+<span id="L1383" class="LineNr">1383 </span><span class="Delimiter">}</span>
+<span id="L1384" class="LineNr">1384 </span>
+<span id="L1385" class="LineNr">1385 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1385'>test-check-screen-reverse</a></span> <span class="Delimiter">{</span>
+<span id="L1386" class="LineNr">1386 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1387" class="LineNr">1387 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1388" class="LineNr">1388 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
+<span id="L1389" class="LineNr">1389 </span>  <a href='405screen.mu.html#L525'>start-reverse-video</a> <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1390" class="LineNr">1390 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
+<span id="L1391" class="LineNr">1391 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1392" class="LineNr">1392 </span>  <a href='405screen.mu.html#L442'>reset-formatting</a> <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1393" class="LineNr">1393 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x62</span>  <span class="Comment"># 'b'</span>
+<span id="L1394" class="LineNr">1394 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1395" class="LineNr">1395 </span>  <a href='405screen.mu.html#L525'>start-reverse-video</a> <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1396" class="LineNr">1396 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x63</span>  <span class="Comment"># 'c'</span>
+<span id="L1397" class="LineNr">1397 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1398" class="LineNr">1398 </span>  <a href='405screen.mu.html#L991'>check-screen-row-in-reverse</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;a c&quot;</span>, <span class="Constant">&quot;F - test-check-screen-reverse&quot;</span>
+<span id="L1399" class="LineNr">1399 </span><span class="Delimiter">}</span>
+<span id="L1400" class="LineNr">1400 </span>
+<span id="L1401" class="LineNr">1401 </span><span class="PreProc">fn</span> <span class="muTest"><a href='405screen.mu.html#L1401'>test-check-screen-blinking</a></span> <span class="Delimiter">{</span>
+<span id="L1402" class="LineNr">1402 </span>  <span class="PreProc">var</span> screen-on-stack: <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1403" class="LineNr">1403 </span>  <span class="PreProc">var</span> <a href='405screen.mu.html#L9'>screen</a>/<span class="Constant">esi</span>: (addr <a href='405screen.mu.html#L9'>screen</a>) <span class="SpecialChar">&lt;-</span> address screen-on-stack
+<span id="L1404" class="LineNr">1404 </span>  <a href='405screen.mu.html#L30'>initialize-screen</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">5</span>, <span class="Constant">4</span>
+<span id="L1405" class="LineNr">1405 </span>  <a href='405screen.mu.html#L544'>start-blinking</a> <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1406" class="LineNr">1406 </span>  <span class="PreProc">var</span> c/<span class="Constant">eax</span>: grapheme <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x61</span>  <span class="Comment"># 'a'</span>
+<span id="L1407" class="LineNr">1407 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1408" class="LineNr">1408 </span>  <a href='405screen.mu.html#L442'>reset-formatting</a> <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1409" class="LineNr">1409 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x62</span>  <span class="Comment"># 'b'</span>
+<span id="L1410" class="LineNr">1410 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1411" class="LineNr">1411 </span>  <a href='405screen.mu.html#L544'>start-blinking</a> <a href='405screen.mu.html#L9'>screen</a>
+<span id="L1412" class="LineNr">1412 </span>  c <span class="SpecialChar">&lt;-</span> copy <span class="Constant">0x63</span>  <span class="Comment"># 'c'</span>
+<span id="L1413" class="LineNr">1413 </span>  <a href='405screen.mu.html#L206'>print-grapheme</a> <a href='405screen.mu.html#L9'>screen</a>, c
+<span id="L1414" class="LineNr">1414 </span>  <a href='405screen.mu.html#L1072'>check-screen-row-in-blinking</a> <a href='405screen.mu.html#L9'>screen</a>, <span class="Constant">1</span>, <span class="Constant">&quot;a c&quot;</span>, <span class="Constant">&quot;F - test-check-screen-blinking&quot;</span>
+<span id="L1415" class="LineNr">1415 </span><span class="Delimiter">}</span>
+<span id="L1416" class="LineNr">1416 </span>
+<span id="L1417" class="LineNr">1417 </span><span class="CommentedCode">#? fn main -&gt; exit-status/ebx: int {</span>
+<span id="L1418" class="LineNr">1418 </span><span class="CommentedCode">#? #?   test-check-screen-color</span>
+<span id="L1419" class="LineNr">1419 </span><span class="CommentedCode">#?   run-tests</span>
+<span id="L1420" class="LineNr">1420 </span><span class="CommentedCode">#?   exit-status &lt;- copy 0</span>
+<span id="L1421" class="LineNr">1421 </span><span class="CommentedCode">#? }</span>
 </pre>
 </body>
 </html>