    <!--
                Copyright: Copyright 1998-2001 W3C (MIT, INRIA, Keio), All Rights Reserved.
    See http://www.w3.org/Consortium/Legal/.
    Author: Geoff Freed, WGBH/NCAM
               Version:March 13 2001, v2
                Module: Content Control Module
               Feature: systemOverdubOrSubtitle test attribute
             File Name: systemOverdubOrSubtitle.smil
      Media Components: 2 JPG, 2 WAV
     Expected Behavior: Show image;
                        play German audio or show German subtitles,
                          as selected by the user.
                        play English audio only if English was selected by
    the user.
    -->
    <smil xmlns="http://www.w3.org/2001/SMIL20/Language">
      <body>
        <par>
          <img src="../images/duborsub.jpg"/>
          <switch>
            <audio src="../sounds/germandub.wav"
    systemOverdubOrSubtitle="overdub" systemLanguage="de"/>
            <img src="../images/germansub.jpg"
    systemOverdubOrSubtitle="subtitle" systemLanguage="de"/>
           <audio src="../sounds/english.wav" systemLanguage="en"/>
          </switch>
        </par>
      </body>
    </smil>