/* 
Run cage to obtain key codes:
$ XTMAPPER_WIDTH=100 XTMAPPER_HEIGHT=100 ./build/cage sh
Output:
/dev/input/wl_keyboard: EV_KEY KEY_D DOWN
/dev/input/wl_keyboard: EV_KEY KEY_W UP
/dev/input/wl_keyboard: EV_KEY KEY_F11 DOWN
/dev/input/wl_keyboard: EV_KEY KEY_SUPER_L UP
*/
#define TOGGLEKEY "KEY_F10"