<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1 Tiny//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11-tiny.dtd">
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">

<defs>
    <rect id="rect" width="10" height="100" fill="red">
        <animate id="an1" attributeName="width" fill="freeze" from="10" to="100" begin="0s" dur="4s"/>
    </rect>
</defs>

<use xlink:href="#rect"/>

</svg>