play_as3.html">working version of A SoundHandler class</a>. The <a href="https://www.w3.org/WAI/WCAG20/Techniques/working-examples/screen_reader_detection_to_prevent_autoplay_as3.fla">source of A SoundHandler class</a> is available.</p>
         </section>
      </section>
   </section><section class="tests"><h2>Tests</h2>
      <section class="procedure"><h3>Procedure</h3>
         <ol>
            <li> Start a screen reader that supports MSAA. </li>
            <li> Open a page containing a Flash movie th