Set component properties as tag attributes
<?xml version="1.0"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"> <mx:Label width="50" height="25" text="Hello World" /> <mx:Label> <mx:width>50</mx:width> <mx:height>25</mx:height> <mx:text>Hello World</mx:text> </mx:Label> </mx:Application>