def rgstr_stamps_root(rgstr_stamps):
    """
    Register stamps with the root timer (see subdivision()).

    Args:
        rgstr_stamps (list, tuple): Collection of identifiers, passed through
            set(), then each is passed through str().

    Returns:
        list: Implemented registered stamp collection.
    """
    rgstr_stamps = sanitize_rgstr_stamps(rgstr_stamps)
    f.root.rgstr_stamps = rgstr_stamps
    return rgstr_stamps