Available on flash
new()
@:flash.propertyread onlybounds:Rectangle
@:flash.propertyread onlyelement:ContentElement
@:flash.propertyread onlymirror:EventDispatcher
@:flash.propertyread onlynextRegion:TextLineMirrorRegion
@:flash.propertyread onlypreviousRegion:TextLineMirrorRegion
@:flash.propertyread onlytextLine:TextLine