      *  @param index The index in the <code>backHistory</code> array
      *  to navigate to.
      *  The default is 0, indicating the directory that is "closest back".
+	 *
+	 *  @see #backHistory
+	 *  @see #canNavigateBack
      */
     public function navigateBack(index:int = 0):void
     {

     *  and <code>forwardHistory</code> properties.
     *  They have new values as soon as this method returns.</p>
     *
     *  <p>The following example shows how to use this property
     *  along with the FileSystemHistoryButton control to create a back button:</p>
     *
     *  <pre>

 *
 *  <p>This event is cancelable.
 *  If you call <code>event.preventDefault()</code>,
 *  the directory is not changed.</p>
 *
 *  <p>After the <code>directory</code> property has changed
 *  and the <code>dataProvider</code> contains File instances
