sounds

keyboard/planck/keymaps/keymap_lock.c

@@ -67,13 +67,13 @@ uint16_t hextokeycode(int hex) {
 float walk_up[][2] = {
   {440.0*pow(2.0,(60)/12.0), 400},
   {0, 50},
-  {440.0*pow(2.0,(67)/12.0), 400},
+  {440.0*pow(2.0,(67)/12.0), 600},
 };
 
 float walk_dn[][2] = {
   {440.0*pow(2.0,(67)/12.0), 400},
   {0, 50},
-  {440.0*pow(2.0,(60)/12.0), 400},
+  {440.0*pow(2.0,(60)/12.0), 600},
 };
 
 const macro_t *action_get_macro(keyrecord_t *record, uint8_t id, uint8_t opt) 

quantum/keymap_unicode.c

@@ -30,6 +30,8 @@ uint16_t hextokeycode(int hex) {
 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);