anchor.diff:    :f24
     (:numlock #x90)
     :scroll
  +  :oem-specific-0
  +  :oem-specific-1
  +  :oem-specific-2
  +  :oem-specific-3
  +  :oem-specific-4
     (:shift-l #xA0)
     :shift-r
     :control-l
  
positive.code:   :m-button
    :x-button1
    :x-button2
    :backspace
    :tab
    :clear
    :return
    (:shift 16)
    (:control 17)
    :menu
    :pause
    :capital
    (:kana #x15)
    (:junja #x17)
    (:final #x18)
    (:hanja #x19)
    (:escape #x1B)
    (:convert #x1C)
    (:no-convert #x1D)
  
negative.code:   :maunch-media-select
    :launch-app1
    :launch-app2
    (:oem1 #xba) ;; varies, ";:" on us
    :oem-plus
    :oem-comma
    :oem-minus
  