VMS Help RTL Routines, SMG$, SMG$DISABLE_BROADCAST_TRAPPING, Argument  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 pasteboard-id

    OpenVMS usage:identifier
    type:         longword (unsigned)
    access:       read only
    mechanism:    by reference

    Specifies the pasteboard for the terminal to be affected. The
    pasteboard-id argument is the address of an unsigned longword
    that contains the pasteboard identifier.