[ { "category": "Modifier keys" }, { "name": "caps_lock" }, { "name": "left_control" }, { "name": "left_shift" }, { "name": "left_option" }, { "name": "left_command" }, { "name": "right_control" }, { "name": "right_shift" }, { "name": "right_option" }, { "name": "right_command" }, { "name": "fn" }, { "category": "Controls and symbols" }, { "name": "return_or_enter" }, { "name": "escape" }, { "name