/CONCATENATE (default)
       /NOCONCATENATE

    Creates one output file from multiple input files when you do not
    use the asterisk (*)  or percent sign (%) wildcard characters
    in the output file specification. The /NOCONCATENATE qualifier
    generates multiple output files. A wildcard character in an input
    file specification results in a single output file consisting
    of the concatenation of all input files matching the file
    specification.

    Files from Files-11 On-Disk Structure Level 2 and 5 disks
    are concatenated in alphanumeric order. If you specify an
    asterisk (*)  or percent sign (%) wildcard character in the file
    version field, files are copied in descending order by version
    number. Files from Files-11 On-Disk Structure Level 1 disks are
    concatenated in random order.