VMS Help System Services, $DCLCMH  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    On Alpha systems, specifies the address of a routine to receive
    control when a Change Mode to User or Change Mode to Supervisor
    instruction trap occurs.

    On VAX systems, specifies the address of a routine to receive
    control when a Change Mode to User or Change Mode to Supervisor
    instruction trap occurs, or when a compatibility mode fault
    occurs.

    Format

      SYS$DCLCMH  addres ,[prvhnd] ,[type]

    C Prototype

      int sys$dclcmh  (int (*addres)(__unknown_params), void

                      *(*(prvhnd)), char type);

  Additional Information (explode) :

• Arguments