e>
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<span class="mlabels"><span class="mlabel">pure virtual</span></span>  </td>
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<p>Notifies the Engine that a display card has been cleared from the screen. Upon getting this notification, the <code><a class="el" href="classaace_1_1alexa_1_1_template_runtime.html">TemplateRuntime</a></code> will release the visual channel. </p>

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