Controls whether the VERIFY command cancels an incomplete
    transaction. You use the /RECOVER qualifier when a transaction
    with the library is incomplete and the rollback mechanism does not
    automatically cancel the command.  For example, you must use
    the /RECOVER qualifier if the OpenVMS system fails while a
    CMS command is updating the library.

    If a CMS command is terminated and the library is left in an
    inconsistent state, CMS recognizes that the last transaction
    was incomplete and automatically initiates command rollback
    to return the library to a valid format.

    If you have set up a restrictive protection scheme and a system
    failure occurs during a CMS transaction and leaves your library
    in an inconsistent state, the VERIFY/RECOVER command should be
    executed by the same person who was using CMS at the time of the
    system failure or by a person with sufficient privileges.