Library /sys$common/syshlp/uafhelp.hlb ADD, Qualifiers, /CLI  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /CLI=cli-name

    Specifies the name of the default command language interpreter
    (CLI) for the CLI field of the UAF record. The cli-name is a
    string of 1 to 31 alphanumeric characters and should be either
    DCL or MCR. The default is DCL. This setting is ignored for
    network jobs.