      *  not be <code>FileSystemEnumerationMode.FILES_ONLY</code> or
      *  <code>FileSystemEnumerationMode.DIRECTORIES_ONLY</code>,
      *  and the <code>extensions</code> property must be <code>null</code>.
-     *  Otherwise, these properties will cause pre-filtering to occur
+     *  Otherwise, these properties cause pre-filtering to occur
      *  before this filter function is called.</p>
      *
      *  <p>This property affects which subdirectories

     *  <p>If you have set <code>enumerationMode</code> to either
     *  <code>FileSystemEnumerationMode.FILES_FIRST</code> or
     *  <code>FileSystemEnumerationMode.DIRECTORIES_FIRST</code>,
     *  then this method will be used to compare names only within
     *  the separate groups of files and directories.</p>
     *
     *  <p>This property affects the order in which

     *  @param index The index in the <code>forwardHistory</code> array
     *  to navigate to.
     *  The default is 0, indicating the directory that is "closest forward".
	 *
	 *  @see #canNavigateForward
	 *  @see #forwardHistory
     */
    public function navigateForward(index:int = 0):void
    {
