     }
     
     /**
-     *  This method is called when the Application's hardware back key is pressed
+     *  Called when the application's hardware back key is pressed
      *  by the user.
+     *
+     *  @param event The event object generated by the key press.
      *   
      *  @langversion 3.0
      *  @playerversion Flash 10

    
    /**
     *  Responsible for restoring the application's state when the
     *  <code>persistNavigatorState</code> flag is set to true.
     * 
     *  <p>This method will only be called if the <code>FlexEvent.APPLICATION_RESTORING</code>
     *  event is not canceled.</p>
     * 
     *  @langversion 3.0

     *  Constructor
     * 
     *  @langversion 3.0
     *  @playerversion Flash 10
     *  @playerversion AIR 2.5
     *  @productversion Flex 4.5
     */ 
