     //--------------------------------------------------------------------------
     
     /**
-     *  Given a data item, return the toString() representation 
-     *  of the data item for an item renderer to display. Null 
-     *  data items return the empty string. 
+     *  From the specified data item, return the String representation 
+     *  of the data item for an item renderer to display.
+     *  This method uses the <code>toString()</code> method of 
+     *  the data item to convert it to a String representation.
+     *  A Null data item returns an empty string.
+     *
+     *  @param item The data item.
+     *
+     *  @return The String representation of the data item.
      *  
      *  @langversion 3.0
      *  @playerversion Flash 10

import spark.layouts.supportClasses.LayoutBase;

/**
 *  Dispatched when a renderer is added to the dataGroup.
 * <code>event.renderer</code> is the renderer that was added.
 *
 *  @eventType spark.events.RendererExistenceEvent.RENDERER_ADD
 *  

[Event(name="rendererAdd", type="spark.events.RendererExistenceEvent")]

/**
 *  Dispatched when a renderer is removed from the container.
 *  The <code>event.renderer</code> property contains 
 *  the renderer that was removed.
 *
 *  @eventType spark.events.RendererExistenceEvent.RENDERER_REMOVE
 *  
