add comments

Author: mstop4

current-scripts/Demos/useful-scripts/scripts/control_manager_functions/control_manager_functions.gml

@@ -1,3 +1,6 @@
+/// @func init_steam_deck_info
+/// @desc Calls get_steam_deck_info from system scripts and stores results locally.
+///       Note: Doesn't work if called at the very start of the game. Wait a few steps before calling it.
 function init_steam_deck_info() {
 	steam_deck_info = get_steam_deck_info();
 }

current-scripts/Demos/useful-scripts/scripts/system/system.gml

@@ -82,6 +82,7 @@ function get_os_browser_string(_os_browser) {
 
 /// @func get_steam_deck_info()
 /// @desc Checks if game is running on Steam Deck and which gamepad slot the controls are connected to
+/// Note: Doesn't work if called at the very start of the game. Wait a few steps before calling it.
 /// @returns {boolean}
 function get_steam_deck_info() {
 	var _result = {