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

    The PSM$REPLACE routine substitutes a user service routine for
    a symbiont routine or adds a user service routine to the set of
    symbiont routines.

    You must call PSM$REPLACE once for each routine that you replace
    or add.

    Format

      PSM$REPLACE  code ,routine

  Additional Information (explode) :

• Returns
• Arguments
• Routine Codes
• Description
• Condition Value Returned