The following description file directs MMS to build MYPROG.EXE using
    the appropriate architecture-dependent *_DEFS.REQ:

         ! Macro definitions
         LIBRARYMODULES = A, B, C, D, E
         LIBRARIES = MYPROG.OLB($(LIBRARYMODULES)) - ! project library
                     SYS$LIBRARY:CRTLIB.OLB          ! C Runtime Library
         ! Dependencies
         MYPROG.EXE : $(LIBRARIES)
              LINK/EXEC=MYPROG MYPROG/LIB/INCLUDE=(A)
         .IF MMSIA64
         A.OBJ, B.OBJ : IA64_DEFS.REQ
         .ELSIF MMSALPHA
         A.OBJ, B.OBJ : ALPHA_DEFS.REQ
         .ELSE
         A.OBJ, B.OBJ : VAX_DEFS.REQ
         .ENDIF
         D.OBJ, E.OBJ : COMMON.H
         E.OBJ : DATA.H

    If this file is named DESCRIP.MMS, the following command  causes  MMS
    to use the file to build MYPROG.EXE:

         $ MMS