content: function C_BUTTON_BACK()
      return 0
  end function
  
  function C_BUTTON_UP()
      return 2
  end function
  
  function C_BUTTON_DOWN()
      return 3
  end function
  
  function C_BUTTON_LEFT()
      return 4
  end function
  
  function C_BUTTON_RIGHT()
      return 5
  end function
  
  function C_BUTTON_SELECT()
      return 6
  end function
  
  function C_BUTTON_INSTANT_REPLAY()
      return 7
  end function
  
  function C_BUTTON_REWIND()
      return 8
  end function
  
  function C_BUTTON_FAST_FORWARD()
      return 9
  end function
  
  function C_BUTTON_INFO()
      return 10
  end function
  
  function C_BUTTON_PLAY()
      return 13
  end function