 
     /**
      *  @private
-     *  Holds the last recorded value of the textFlow generation.  Used to
-     *  determine whether to return immediately from damage event if there 
-     *  have been no changes.
+     *  Holds the last recorded value of the textFlow generation for _textFlow.  
+     *  Used to determine whether to return immediately from damage event if 
+     *  there have been no changes.
      */
     private var lastGeneration:uint = 0;    // 0 means not set
         

        	// If 'content' was last set,
        	// we have to first turn that into a TextFlow.
        	if (_content != null)
	        	_textFlow = createTextFlowFromContent(_content);
	        		
            // Once we have a TextFlow, we can export its plain text.
            _text = staticPlainTextExporter.export(

     */
    private function textFlow_damageHandler(event:DamageEvent):void
    {
        // If the target is the current textFlow then check the generation.
        // If there are no changes, don't recompose.  The TextFlowFactory
        // createTextLines dispatches damage events every time the textFlow
        // is composed, even if there are no changes.
        if (TextFlow(event.target) == _textFlow)
        { 
            if (_textFlow.generation == lastGeneration)
                return;
            
            // Update the last know generation for _textFlow.
            lastGeneration = _textFlow.generation;
        }

        // Invalidate _text and _content.
        _text = null;
        _content = null;
