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