VMS Help CMS, VERIFY, Command Parameters  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 element-expression

    Specifies one or more elements to be verified. If you do not
    supply an element expression, CMS verifies every file in the
    library. You cannot specify an element expression parameter if
    you use the /RECOVER qualifier. An element expression can be an
    element name, a group name, a wildcard expression, or a list of
    these separated by commas.