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                <a class="pilcrow" href="#section-68">&#182;</a>
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              <p>Returns true if passed key is currently down.  <code>keyCode</code> is a
unique number that represents a particular key on the keyboard.</p>

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            <div class="content"><div class='highlight'><pre>    <span class="hljs-keyword">this</span>.isDown = <span class="hljs-function"><span class="hljs-keyword">function</span><span class="hljs-params">(keyCode)