enum backlight_level {
BACKLIGHT_ALPHA = 0b0000001,
BACKLIGHT_NUMERIC = 0b0000010,
BACKLIGHT_MODNUM = 0b0000100,
BACKLIGHT_BACKSIDE = 0b0001000,
BACKLIGHT_TOPRIGHT = 0b0010000,
BACKLIGHT_FROW = 0b0100000,
};