<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:Canvas width="400" height="300">
<mx:Canvas left="20" right="20" top="20" bottom="50" id="innerCanvas">
<mx:Button label="Button Label" left="20" right="20" top="10"/>
<mx:TextInput left="30" right="30" bottom="10"/>
</mx:Canvas>
</mx:Canvas>
</mx:Application>
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