Gamestate.load_menu("menu_name") from GDScript (the menus have to be created in the FGS Menus tab first)Gamestate.unload_menu()Gamestate.register_setting(...), Gamestate.get_setting(...), Gamestate.change_setting(...) and Gamestate.unregister_setting(...)Gamestate.register_shared_value(...), Gamestate.get_shared_value(...), Gamestate.change_shared_value(...) and Gamestate.unregister_shared_value(...)