VMS Help DECnet-Plus, DCL Commands, SET, HOST, /X29, Qualifiers, /CLOSED_USER_GROUP[=string]  *Conan The Librarian (sorry for the slow response - running on an old VAX)

       /NOCLOSED_USER_GROUP

    (Default=/NOCLOSED_USER_GROUP)

    If this qualifier is present with a value, the value refers to
    the name of the closed user group, and the parameter is the
    usual DTE address.

    When this qualifier is without a value, the DTE address parameter
    is assumed to be the name of a bilateral closed user group.