# File lib/fox16/undolist.rb, line 94
    def initialize
      # Be sure to call base class initialize
      super

      # Set up the message map for this instance
      FXMAPFUNC(SEL_COMMAND, ID_CLEAR,    "onCmdClear")
      FXMAPFUNC(SEL_UPDATE,  ID_CLEAR,    "onUpdClear")
      FXMAPFUNC(SEL_COMMAND, ID_REVERT,   "onCmdRevert")
      FXMAPFUNC(SEL_UPDATE,  ID_REVERT,   "onUpdRevert")
      FXMAPFUNC(SEL_COMMAND, ID_UNDO,     "onCmdUndo")
      FXMAPFUNC(SEL_UPDATE,  ID_UNDO,     "onUpdUndo")
      FXMAPFUNC(SEL_COMMAND, ID_REDO,     "onCmdRedo")
      FXMAPFUNC(SEL_UPDATE,  ID_REDO,     "onUpdRedo")
      FXMAPFUNC(SEL_COMMAND, ID_UNDO_ALL, "onCmdUndoAll")
      FXMAPFUNC(SEL_UPDATE,  ID_UNDO_ALL, "onUpdUndo")
      FXMAPFUNC(SEL_COMMAND, ID_REDO_ALL, "onCmdRedoAll")
      FXMAPFUNC(SEL_UPDATE,  ID_REDO_ALL, "onUpdRedo")

      # Instance variables
      @undolist = []
      @redolist = []
      @marker = nil
      @size = 0
    end