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<pre id='vimCodeElement'>
<span id="L1" class="LineNr"> 1 </span><span class="Comment"># example program: managing the display using 'screen' objects</span>
<span id="L2" class="LineNr"> 2 </span>
<span id="L3" class="LineNr"> 3 </span><span class="Comment"># The zero screen below means 'use the real screen'. Tests can also use fake</span>
<span id="L4" class="LineNr"> 4 </span><span class="Comment"># screens.</span>
<span id="L5" class="LineNr"> 5 </span><span class="muRecipe">def</span> <a href='screen.mu.html#L5'>main</a> [
<span id="L6" class="LineNr"> 6 </span> open-console
<span id="L7" class="LineNr"> 7 </span> <a href='081print.mu.html#L46'>clear-screen</a><span class="Constant"> null/screen</span> <span class="Comment"># non-scrolling app</span>
<span id="L8" class="LineNr"> 8 </span> 10:char <span class="Special"><-</span> copy <span class="Constant">97/a</span>
<span id="L9" class="LineNr"> 9 </span> print<span class="Constant"> null/screen,</span> 10:char/a, <span class="Constant">1/red</span>, <span class="Constant">2/green</span>
<span id="L10" class="LineNr">10 </span> 1:num/<span class="Special">raw</span>, 2:num/<span class="Special">raw</span> <span class="Special"><-</span> <a href='081print.mu.html#L577'>cursor-position</a><span class="Constant"> null/screen</span>
<span id="L11" class="LineNr">11 </span> <a href='084console.mu.html#L88'>wait-for-event</a><span class="Constant"> null/console</span>
<span id="L12" class="LineNr">12 </span> <a href='081print.mu.html#L46'>clear-screen</a><span class="Constant"> null/screen</span>
<span id="L13" class="LineNr">13 </span> <a href='081print.mu.html#L591'>move-cursor</a><span class="Constant"> null/screen,</span> <span class="Constant">0/row</span>, <span class="Constant">4/column</span>
<span id="L14" class="LineNr">14 </span> 10:char <span class="Special"><-</span> copy <span class="Constant">98/b</span>
<span id="L15" class="LineNr">15 </span> print<span class="Constant"> null/screen,</span> 10:char
<span id="L16" class="LineNr">16 </span> <a href='084console.mu.html#L88'>wait-for-event</a><span class="Constant"> null/console</span>
<span id="L17" class="LineNr">17 </span> <a href='081print.mu.html#L591'>move-cursor</a><span class="Constant"> null/screen,</span> <span class="Constant">0/row</span>, <span class="Constant">0/column</span>
<span id="L18" class="LineNr">18 </span> <a href='081print.mu.html#L524'>clear-line</a><span class="Constant"> null/screen</span>
<span id="L19" class="LineNr">19 </span> <a href='084console.mu.html#L88'>wait-for-event</a><span class="Constant"> null/console</span>
<span id="L20" class="LineNr">20 </span> <a href='081print.mu.html#L645'>cursor-down</a><span class="Constant"> null/screen</span>
<span id="L21" class="LineNr">21 </span> <a href='084console.mu.html#L88'>wait-for-event</a><span class="Constant"> null/console</span>
<span id="L22" class="LineNr">22 </span> <a href='081print.mu.html#L706'>cursor-right</a><span class="Constant"> null/screen</span>
<span id="L23" class="LineNr">23 </span> <a href='084console.mu.html#L88'>wait-for-event</a><span class="Constant"> null/console</span>
<span id="L24" class="LineNr">24 </span> <a href='081print.mu.html#L726'>cursor-left</a><span class="Constant"> null/screen</span>
<span id="L25" class="LineNr">25 </span> <a href='084console.mu.html#L88'>wait-for-event</a><span class="Constant"> null/console</span>
<span id="L26" class="LineNr">26 </span> <a href='081print.mu.html#L688'>cursor-up</a><span class="Constant"> null/screen</span>
<span id="L27" class="LineNr">27 </span> <a href='084console.mu.html#L88'>wait-for-event</a><span class="Constant"> null/console</span>
<span id="L28" class="LineNr">28 </span> close-console
<span id="L29" class="LineNr">29 </span>]
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