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

 new-handler

    OpenVMS usage:procedure
    type:         procedure value
    access:       read only
    mechanism:    by value

    Routine to be set up as the condition handler. The new-handler
    argument is the address of the procedure value to this routine.