    <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 values="0,0;5,400;400,400" begin="2s" speed="2" dur="10s" targetElement="d1"  calcMode="paced" additive="sum" fill="remove"/>
            </par>
        </body>
    </smil>