                shortcut in ['-tab', '-return', '-backspace', '-suppr',
                             'CtrlShift-down', 'CtrlShift-up',
                             'CtrlShift-left', 'CtrlShift-right',
-                            'Ctrl-B', 'Ctrl-U', 'Ctrl-K',
+                            'Ctrl-B', 'Ctrl-U', 
                             'Ctrl-V', 'Shift-tab', '-space', '-other', 'Alt-A']
             @_addHistory()
            

    ### -------------------------------------------------------------------------
    #  unDo :
    # Undo the previous action
    ###
    unDo : () ->
        # if there is an action to undo

            # 2 - restore selection
            savedSel = @_history.historySelect[@_history.index+1]
            savedSel.restored = false
            rangy.deserializeSelection(savedSel, @linesDiv)
            # 3 - restore scrollbar position
            xcoord = @_history.historyScroll[@_history.index+1].xcoord
            ycoord = @_history.historyScroll[@_history.index+1].ycoord
