Landon Curt Noll
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<div class="header">
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<img src="../../png/ioccc.png" alt="IOCCC image by Matt Zucker" width=300 height=110>
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<h1>The International Obfuscated C Code Contest</h1>
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<h2>1991/ant - Best Utility</h2>
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<div class="navbar">
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<a class="Left Disabled" href="#">first entry</a>
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<a class="Left" href="../index.html">↑ 1991 ↑</a>
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<a class="Left" href="../brnstnd/index.html">brnstnd →</a>
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<a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/ant.c">C code</a>
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<a class="Right" href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/Makefile">Makefile</a>
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<a class="Right" href="#inventory">Inventory</a>
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<a class="Right" href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F1991%2Fant%2Findex.html">✓</a>
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<h2 id="author">Author:</h2>
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<ul>
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<li>Name: <a href="../../authors.html#Anthony_C_Howe">Anthony C. Howe</a><br>
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Location: <a href="../../location.html#CA">CA</a> - <em>Canada</em></li>
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<h2 id="to-build">To build:</h2>
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<pre><code> make all</code></pre>
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<p>There is an <a href="#alternate-code">alternate version</a> that might feel a bit more
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familiar to vi(m) users.</p>
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<h2 id="to-use">To use:</h2>
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<pre><code> ./ant some_file</code></pre>
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<p>NOTE: the file must already exist and not specifying any arg will make the
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program exit without doing anything.</p>
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<h2 id="try">Try:</h2>
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<pre><code> make hill
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./ant hill</code></pre>
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<pre><code> make mole
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./ant mole</code></pre>
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<h2 id="alternate-code">Alternate code:</h2>
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<p>This version changes the commands slightly so that to go to the first column you
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should enter <code>0</code>, to go to the last column you should enter <code>$</code>, to quit you
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should enter <code>q</code>, to go back a word you should enter <code>b</code> and to go forwards a
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word you should enter <code>w</code>. Also, and perhaps most useful, rather than having to
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hit ctrl-L (form-feed, <code>\f</code>) to get back to command mode you can use the usual
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ESC (<code>\x1b</code>).</p>
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<p>These will make it slightly less unwieldy for those familiar with vi(m); the
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rest was unchanged.</p>
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<h3 id="alternate-build">Alternate build:</h3>
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<pre><code> make alt</code></pre>
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<h3 id="alternate-use">Alternate use:</h3>
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<p>Use <code>ant.alt</code> as you would <code>ant</code> above with the changes in the input keys. See
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the author’s remarks for the remaining keys.</p>
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<h2 id="judges-remarks">Judges’ remarks:</h2>
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<p>The author was kind enough to supply a list of references below,
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in case you are still confused after read the source! :-)</p>
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<p>BTW: you’ve most likely heard the joke that if you want a pseudo-random string
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of characters you can put a user unfamiliar with vi(m) in a vi(m) session (in
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insert mode) and ask them to exit. Well in this case you’re likely to have this
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problem if you ARE a vi(m) user! :-) … especially if you don’t read the
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information below. This means if you’re reading this in vi(m) you’ll have to
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exit this like in normal vi(m) and then try the same with <code>./ant</code> only to fail. :-)</p>
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<p>NOTE: to enter form feed you should be able to hit <code>ctrl-L</code>. This will allow you
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to exit insert mode rather than ESC like in normal vi(m). See the author’s
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commands section for other commands.</p>
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<h2 id="authors-remarks">Author’s remarks:</h2>
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<p>Ant’s Editor vIOCCC91</p>
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<p>Text files consists of lines of printable text or tab characters. A line can be
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of arbitrary length and is delimited by either a newline or the end of file.
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Carriage return is mapped to newline on input and ignored on output. Tab stops
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are every eight columns. Non-printable characters may have unpredictable
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results depending on the implementation of <code>curses</code>.</p>
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<h3 id="commands">Commands</h3>
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<ul>
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<li>h j k l left, down, up, right cursor movement</li>
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<li>H J K L word left, page down, page up, word right</li>
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<li><label><input type="checkbox" />beginning and end of line</label></li>
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<li>t b top and bottom of file</li>
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<li>i enter insert mode, form-feed to quit</li>
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<li>x delete character under the cursor</li>
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<li>W write buffer to file</li>
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<li>R refresh the screen</li>
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<li>Q quit</li>
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</ul>
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<h3 id="exit-status">Exit status</h3>
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<ul>
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<li>0 success</li>
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<li>2 missing edit filename</li>
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</ul>
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<h3 id="about-this-entry">About this entry</h3>
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<p>The <code>BUF</code> size should be set at compile time to 32767. This value was used
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because the Sozobon C compiler for the Atari ST has 16 bit ints and a limit on
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the size of arrays & structures of 32k. Also the WatCom C compiler for the PC
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also has 16 bits ints. On machines that have 32 bit ints (most unix boxes), a
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larger value for <code>BUF</code> could be used.</p>
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<p>It is recommend that compact memory model be used on PC class machines. Small
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memory model may work too provided <code>BUF</code> is not too large.</p>
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<p>The character constants <code>'\b'</code>, <code>'\f'</code>, <code>'\n'</code>, <code>'\r'</code>, <code>'\t'</code> are used in order
|
||
to provide more portable code, since the compiler should handle the translation
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of them into the native character set. Note that <code>'\f'</code> (form-feed) was used to
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exit insert mode because K&R C had no escape constant for the escape-key.</p>
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<p>My goals for this project were to learn and experiment with the Buffer Gap
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Scheme [Fin80][net90], write a useful and <em>portable</em> program, and meet the
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||
requirements of the IOCCC. I initially planned to have a mini <code>curses</code> built-in
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like <a href="../../authors.html#John_Tromp">John Tromp</a>’s
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||
<a href="../../1989/tromp/index.html">1989/tromp</a> Tetris entry,
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however this was not as portable as using a <code>curses</code> library with
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<code>TERMINFO</code>/<code>TERMCAP</code> support.</p>
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<p>I plan to post follow-ups such as unobfuscated versions and bugs fixes to
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comp.editors. Reposts of the editor.101, gap.doc, and editor.102 can be found
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in the same group every so often.</p>
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||
<p>This entry will display a file with long lines, but has trouble scrolling the
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screen with long lines. Paging up and down should work correctly, however.</p>
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<h3 id="references">References:</h3>
|
||
<p>[Fin80] Craig A. Finseth, “Theory and Practice of Text Editors or<br>
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||
A Cookbook For An EMACS”, TM-165, MIT Lab. for Computer<br>
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||
Science</p>
|
||
<p>[KeP81] Kernighan & Plauger, “Software Tools in Pascal”,<br>
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||
Addison-Wesley, 81, chapter 6</p>
|
||
<p>[Mil86] Eugene W. Myers & Webb Miller, “Row-replacement Algorithms
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||
for Screen Editors”, TR 86-19, Dept. of Computer Science,<br>
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||
U. of Arizona</p>
|
||
<p>[MyM86] Eugene W. Myers & Webb Miller, “A simple row-replacement<br>
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||
method”, TR 86-28, Dept. of Computer Science, U. of Arizona</p>
|
||
<p>[Mil87] Webb Miller, “A Software Tools Sampler”, Prentice Hall, 87
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||
ISBN 0-13-822305-X, chapter 5</p>
|
||
<p>[net90] “Editor 101/102” articles from comp.editors</p>
|
||
<!--
|
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|
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Copyright © 1984-2024 by Landon Curt Noll. All Rights Reserved.
|
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You are free to share and adapt this file under the terms of this license:
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|
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Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
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|
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For more information, see:
|
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|
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https://creativecommons.org/licenses/by-sa/4.0/
|
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<div id="inventory">
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||
<h1 id="inventory-for-1991ant">Inventory for 1991/ant</h1>
|
||
</div>
|
||
<p><a href="#top">Jump to top</a></p>
|
||
<h2 id="primary-files">Primary files</h2>
|
||
<ul>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/ant.c">ant.c</a> - entry source</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/Makefile">Makefile</a> - entry Makefile</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/ant.alt.c">ant.alt.c</a> - alternative source</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/ant.orig.c">ant.orig.c</a> - original source</li>
|
||
</ul>
|
||
<h2 id="secondary-files">Secondary files</h2>
|
||
<ul>
|
||
<li><a href="1991_ant.tar.bz2">1991_ant.tar.bz2</a> - download entry tarball</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/README.md">README.md</a> - markdown source for this web page</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/.entry.json">.entry.json</a> - description of entry in JSON</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/.gitignore">.gitignore</a> - list of files that should not be committed under git</li>
|
||
<li><a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/1991/ant/.path">.path</a> - directory path from top directory</li>
|
||
<li><a href="index.html">index.html</a> - this web page</li>
|
||
</ul>
|
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<!--
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Copyright © 1984-2024 by Landon Curt Noll. All Rights Reserved.
|
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|
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You are free to share and adapt this file under the terms of this license:
|
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|
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Creative Commons Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)
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|
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For more information, see:
|
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|
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https://creativecommons.org/licenses/by-sa/4.0/
|
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-->
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<div class="footer">
|
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<div id="copyright"><h2>Copyright and CC BY-SA 4.0 License</h2></div>
|
||
<p>All IOCCC content including this file and web page are:</p>
|
||
<b> Copyright © 1984-2024 by Landon Curt Noll. <a href="https://creativecommons.org/faq/#what-does-some-rights-reserved-mean">Some Rights Reserved</a>.</b>
|
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<p>This work is licensed by Landon Curt Noll under:</p>
|
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<p><b><a href="https://creativecommons.org/licenses/by-sa/4.0/?ref=chooser-v1"
|
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target="_blank" rel="license noopener noreferrer" style="display:inline-block;"> CC BY-SA 4.0
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<img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;"
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src="../../png/cc.png"
|
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alt="cc inside circle symbol">
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<img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;"
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src="../../png/by.png"
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alt="person inside circle symbol">
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<img style="height:22px!important;margin-left:3px;vertical-align:text-bottom;"
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src="../../png/sa.png"
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alt="arrow looping back on itself inside circle symbol">
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</a></b></p>
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<p>The <b>CC BY-SA 4.0 LEGAL CODE</b> for this license is found under:</p>
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<p> <b><a href="https://creativecommons.org/licenses/by-sa/4.0/legalcode.en">
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https://creativecommons.org/licenses/by-sa/4.0/legalcode.en</a></b></p>
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<p>You should <b>carefully review</b> all of the terms and conditions of the
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<a href="https://creativecommons.org/licenses/by-sa/4.0/legalcode.en">actual license</a>
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before using the licensed material.</p>
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<p>You may wish to review the <b><a href="../../license.html">highlights of some of the key
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features and terms</a></b> of the <a href="https://creativecommons.org/licenses/by-sa/4.0/legalcode.en">actual license</a>.</p>
|
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<h2>Coda</h2>
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<p><a href="https://validator.w3.org/nu/?doc=https%3A%2F%2Fioccc-src.github.io%2Ftemp-test-ioccc%2F1991%2Fant%2Findex.html">Nu HTML check this web page</a></p>
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<p><a href="#top">Jump to top</a> <a href="#content">Jump to Content</a> <a href="#inventory">Jump to Inventory</a></p>
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