Label=(label-name-list)

    Specifies the 1- to 6-character string with which the volumes
    of the backup file have been labeled. The Label qualifier is
    applicable only to tape volumes. You must specify one or more
    label names when you use the Label qualifier.

    You can specify a list of tape labels for multiple tapes. If you
    list multiple tape label names, separate the names with commas
    and enclose the list of names within parentheses.

    In a normal dump after-journal operation, the Label qualifier
    you specify with the RMU Dump After_Journal command should be
    the same Label qualifier you specified with the RMU Backup After_
    Journal command to back up your after-image journal file.

    The Label qualifier can be used with indirect file references.
    See Indirect-Command-Files for more information.