<smil>
  <head>
	<layout>
		<root-layout height="100" width="250" background-color="black"/>
		<region id="r1" top="0" left="0" height="98" width="250"/>
	</layout>
  </head>
  <body>
      <seq>
         <par>
           <img src="http://smil.nist.gov/interop1/choose.jpg"
               dur="1s" region="r1"/>
           <audio src="http://smil.nist.gov/interop1/correct.wav"
                  clip-begin="npt=0s"
		  clip-end="npt=1s" />
         </par>
         <par>
           <img src="http://smil.nist.gov/interop1/getout.jpg"
                dur="1s" region="r1"/>
           <audio src="http://smil.nist.gov/interop1/correct.wav"
                  clip-begin="npt=1s"
		  clip-end="npt=2s" /> 
         </par>
      </seq>
  </body>
</smil>