VMS Help CLI Routines, CLI$DISPATCH, Description  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    The CLI$DISPATCH routine invokes the subroutine associated with
    the verb most recently parsed by a CLI$DCL_PARSE routine call.
    If the routine is successfully invoked, the return status is the
    status returned by the action routine. Otherwise, a status of
    CLI$_INVROUT is returned.