anchor.diff:         "p" 'paste
          "d d" 'cut
          "u" 'undo
  +       "C-r" 'redo
          "M-h" 'history-backwards-query
          "M-l" 'history-forwards-query
          "M-H" 'history-all-query
  
positive.code:        "C-y" 'paste
         "M-w" 'copy
         "C-/" 'undo
         "C-w" 'cut
         "button9" 'history-forwards
         "button8" 'history-backwards
         "C-p" 'scroll-up
  
negative.code:        "C-x C-w" 'copy-hint-url
         "C-c" 'copy
         "C-v" 'paste
         ;; FIXME: C-x is a command prefix, thus no cutting in CUA :/
         "C-a" 'select-all
         "C-z" 'undo
         "C-Z" 'redo
         "button9" 'history-forwards
         "button8" 'history-backwards
         "C-+" 'zoom-page
  