DEMAND PAGING PERFORMANCE TUNING SERVICES


            Some applications  will discard  memory objects  or will not
            access objects for long periods of time.  These services can
            be used to improve the performance of demand paging.

            Although  these   functions  are   only  relevant  for  DPMI
            implementations   that   support   virtual   memory,   other
            implementations will  ignore these functions (it will always
            return carry  clear).   Therefore your  code can always call
            these functions  regardless of the environment it is running
            under.

            Since both of these functions are simply advisory functions,
            the operating  system may  choose to  ignore them.   In  any
            case,  your  code  should  function  properly  even  if  the
            functions fail.