VMS Help BACKUP Command, Qualifiers, /JOURNAL  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /JOURNAL[=file-spec]

    Command Qualifier

    Specifies that a BACKUP save operation is to create, or append
    information to, a BACKUP journal file. The BACKUP journal file
    contains an on-disk record of BACKUP save operations and saved
    files.

    To list the contents of a backup journal file, enter a
    BACKUP/JOURNAL/LIST command without an input or output specifier.