/sys$common/syshlp/helplib.hlb CMS, RETRIEVE, ARCHIVE, Qualifiers, /OUTPUT[=file-specification]  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Directs CMS to write output to the specified file. If you omit the
    /OUTPUT qualifier (or if you specify /OUTPUT but do not provide a
    file specification), CMS creates a file with the same name as the
    archived element and the file type .CMS_ARCHIVE.

    If you retrieve generations from more than one archive file and
    you do not specify wildcards in the output file specification, CMS
    creates successive versions of the file indicated by /OUTPUT.