# gui/interface/RadioBox.tcl

    @interface RadioBox : Box {
      {
        selection itemsList
        imageOn imageOff
      }
      - list ;
      - list: aList ;

      - add: anItem ;
      - remove: anItem ;
      - contains: anItem ;

      - selection ;
      - selection: anItem ;

      - indexOfSelection: anIndex ;
      - indexOfSelection ;

      - onSelection: aCallback ;
      - onSelection ;

      - clear ;
      - sort ;

      - loadFromFile: aFile ;
    }