 
     /**
      *  The value of the <code>value</code> property of the selected
-     *  FxRadioButton control in the group, if this has been set
+     *  RadioButton control in the group, if this has been set
      *  to be something other than <code>null</code> (the default value).
      *  Otherwise, <code>selectedValue</code> is the value of the
-     *  <code>label</code> property of the selected FxRadioButton.
-     *  If no FxRadioButton is selected, this property is <code>null</code>.
+     *  <code>label</code> property of the selected RadioButton.
+     *  If no RadioButton is selected, this property is <code>null</code>.
      *
      *  <p>If you set <code>selectedValue</code>, Flex selects the
-     *  FxRadioButton control whose <code>value</code> or
+     *  RadioButton control whose <code>value</code> or
      *  <code>label</code> property matches this value.</p>
      *
      *  @default null

     */
    private function radioButton_removedHandler(event:Event):void
    {
        var rb:FxRadioButton = event.target as FxRadioButton;
        if (rb)
        {
            //trace("radioButton_removedHandler", rb.id);


    /**
     *  @private
     *  The document containing a reference to this RadioButtonGroup.
     */
    private var document:IFlexDisplayObject;

    /**
     *  @private
     *  An Array of the RadioButtons that belong to this group.
     */
    private var radioButtons:Array /* of RadioButton */ = [];

    /**
     *  @private
