     /**
      *  @private
      */
-    private function compose(width:Number = NaN,
-                             height:Number = NaN):void
+    private function compose(width:Number = NaN, height:Number = NaN):Boolean
     {
         textFlow = createTextFlow();
         _content = textFlow;

        
        textFlowComposer.addTextLines(DisplayObjectContainer(displayObject));

        displayObject.scrollRect = textFlowComposer.isOverset ? bounds : null;
    }
}


        if (!mx_internal::styleChainInitialized)
            return;

        var overset:Boolean = compose(unscaledWidth, unscaledHeight);
        
        // Use scrollRect to clip overset lines.
        // But don't set scrollRect to null if it is already null,
        // because this causes Player 10.0 to allocate memory.
        if (overset)
        {
            displayObject.scrollRect =
                new Rectangle(0, 0, unscaledWidth, unscaledHeight);
        }
        else if (displayObject.scrollRect)
        {
            displayObject.scrollRect = null;
        }
    }

    /**
