def _review(subs, shared):
    """Configure the `doorstop review` subparser."""
    info = 'absolve items of their unreviewed status'
    sub = subs.add_parser('review', description=info.capitalize() + '.',
        help=info, **shared)
    sub.add_argument('label', help="item UID, document prefix, or 'all'")
    group = sub.add_mutually_exclusive_group()
    group.add_argument('-i', '--item', action='store_true', help=
        "indicates the 'label' is an item UID")
    group.add_argument('-d', '--document', action='store_true', help=
        "indicates the 'label' is a document prefix")
