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<p>Waits for drawing queue to become empty. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">waitVSync</td><td>If true drawings are done on vertical retracing (slow), if false drawings are perfomed immediately (fast with flickering). </td></tr>
  </table>
  </dd>
</dl>

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