      */
     private function addedToStageHandler(event:Event):void
     {
-    	// having renderHandler attached only while on the stage gives a performance improvement.
+    	// Having renderHandler() attached only while on the stage
+    	// gives a performance improvement.
      	removeEventListener(Event.ADDED_TO_STAGE, addedToStageHandler);
 	   	addEventListener(Event.RENDER, renderHandler);
     	addEventListener(Event.REMOVED_FROM_STAGE, removedFromStageHandler);

    		}
    	}

    	clearFlag(ALL_INVALIDATION_FLAGS|FLAG_VALIDATE_IN_PROGRESS);
    }
    
    /**


    /**
     *  @copy flash.text.TextField#getCharBoundaries()
     *  @playerversion Flash 10
     *  @playerversion AIR 1.5
     *  @langversion 3.0
     */
    public function getCharBoundaries(charIndex:int):Rectangle
    {
