This band adds handling for the "5" key in the numeric keypad. This is
called VK_CLEAR in the VK_ constants. Using this band, and with
NumLock off, doing 5 will send NetHack the letter 'g'. Doing SHIFT-5 will
send 'G'. Without this band and with NumLock off, 5 does nothing. With
NumLock on, 5 sends 5.