    <smil xmlns="http://www.w3.org/2001/SMIL20/Language">
        <head>
            <layout>
                <root-layout width="640" height="480" backgroundColor="white"/>
                <region id="d1" backgroundColor="blue" top="5px" left="5px" height="20px" width="20px" />
            </layout>
        </head>
        <body>
            <par dur="indefinite">
                <animateMotion to="5, 400" begin="2s" accelerate="1" dur="2s" targetElement="d1"  additive="sum" fill="hold"/>
            </par>
        </body>
    </smil>