void action_function(keyrecord_t *record, uint8_t id, uint8_t opt)
{
+ // For more info on how this works per OS, see here: https://en.wikipedia.org/wiki/Unicode_input#Hexadecimal_code_input
+
if (record->event.pressed) {
uint16_t unicode = (opt << 8) | id;
register_code(KC_LALT);