     }
     
     /**
-     *  Called by the default prepareForPlay() implementation, this method 
-     *  is responsible for creating the spark effect that should be played 
-     *  on the tab bar when the transition starts.  This method should be
-     *  overridden by sub classes.  By default, this returns null.
-     * 
-     *  @return An IEffect instance serving as the tab bar transition. Will be played
-     *  by the default play() method implementation.
-     * 
-     *  @langversion 3.0
-     *  @playerversion Flash 10
+     *  Called by the default <code>prepareForPlay()</code> implementation, 
+     *  this method is responsible for creating the Spark effect played 
+     *  on the tab bar when the transition starts.  
+     *  This method should be overridden by subclasses.  
+     *  By default, this returns null.
+     * 
+     *  @return An IEffect instance serving as the tab bar transition. 
+     *  This effect is played by the default <code>play()</code> method implementation.
+     * 
+     *  @langversion 3.0
      *  @playerversion AIR 2.5
      *  @productversion Flex 4.5
      */

    private var _transitionControlsWithContent:Boolean;
    
    /**
     *  When set to true, the primary view transition
     *  is used to transition the navigator in its entirety,  
     *  and sub-transitions such as the action bar or 
     *  tab bar transitions are not performed.
     *
     *  <p>Note that even when set to false, there are cases
     *  where its not feasible to transition the action bar 
     *  or tab bar, such as when the action bar or 
     *  tab bar does not exist in one of the two views or
     *  if the tab bar or action bar changes size.</p>
     *
     *  @default false
     * 
     *  @langversion 3.0
     *  @playerversion Flash 10
     *  @playerversion AIR 2.5
     *  @productversion Flex 4.5
     */

     *  incompatible in some way.
     * 
     *  @langversion 3.0
     *  @playerversion AIR 2.5
     *  @productversion Flex 4.5
     */ 
