KS_KP_F4
KC(74), KS_KP_F4, /* replace subtract */
KC(74), KS_KP_F4, /* replace subtract */
KC(164), KS_KP_F4,
KC(74), KS_KP_F4, /* replace subtract */
if (in >= KS_KP_F1 && in <= KS_KP_F4) {
if (in >= KS_KP_F1 && in <= KS_KP_F4) {