qmk_firmware/data/constants/keycodes/keycodes_0.0.6_quantum.hjson

{
    "keycodes": {
        "0x7C20": "!delete!", // old QK_OUTPUT_AUTO
        "0x7C21": "!delete!", // old QK_OUTPUT_USB
        "0x7C22": "!delete!", // old QK_OUTPUT_BLUETOOTH
        "0x7C7B": {
            "group": "quantum",
            "key": "QK_LAYER_LOCK",
            "aliases": [
                "QK_LLCK"
            ]
        }
    }
}