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<pre id='vimCodeElement'>
<span class="Comment"># example program: managing the display using 'screen' objects</span>
<span class="Comment"># The zero screen below means 'use the real screen'. Tests can also use fake</span>
<span class="Comment"># screens.</span>
<span class="muRecipe">def</span> main [
open-console
<span class="Constant">10</span>:character<span class="Special"> <- </span>copy <span class="Constant">97/a</span>
print <span class="Constant">0/screen</span>, <span class="Constant">10</span>:character/a, <span class="Constant">2/red</span>
<span class="Constant">1</span>:number/<span class="Special">raw</span>, <span class="Constant">2</span>:number/<span class="Special">raw <- </span>cursor-position <span class="Constant">0/screen</span>
wait-for-event <span class="Constant">0/console</span>
clear-screen <span class="Constant">0/screen</span>
move-cursor <span class="Constant">0/screen</span>, <span class="Constant">0/row</span>, <span class="Constant">4/column</span>
<span class="Constant">10</span>:character<span class="Special"> <- </span>copy <span class="Constant">98/b</span>
print <span class="Constant">0/screen</span>, <span class="Constant">10</span>:character
wait-for-event <span class="Constant">0/console</span>
move-cursor <span class="Constant">0/screen</span>, <span class="Constant">0/row</span>, <span class="Constant">0/column</span>
clear-line <span class="Constant">0/screen</span>
wait-for-event <span class="Constant">0/console</span>
cursor-down <span class="Constant">0/screen</span>
wait-for-event <span class="Constant">0/console</span>
cursor-right <span class="Constant">0/screen</span>
wait-for-event <span class="Constant">0/console</span>
cursor-left <span class="Constant">0/screen</span>
wait-for-event <span class="Constant">0/console</span>
cursor-up <span class="Constant">0/screen</span>
wait-for-event <span class="Constant">0/console</span>
close-console
]
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