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                <a class="pilcrow" href="#section-66">&#182;</a>
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              <p>When key goes down, record that it is down.</p>

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            <div class="content"><div class='highlight'><pre>    <span class="hljs-built_in">window</span>.addEventListener(<span class="hljs-string">'keydown'</span>, <span class="hljs-function"><span class="hljs-keywor