mustella/tests/mx/effects/AnimateProperty/SWFs/Assets/TrixButton.mxml

<?xml version="1.0" encoding="utf-8"?>
<mx:Button 
    xmlns:mx="http://www.adobe.com/2006/mxml" 
	width="300" 
	height="30"
    x="100"
    y="10"
    label="Trix Button">
</mx:Button>