/VAX (Default on VAX systems)

   For modules, FORTRAN writes the following comment to the output file:
   !DEC$ OPTIONS/ALIGN=(RECORDS=PACKED,COMMONS=PACKED)/NOWARN

   CC generates "double" as return type for functions if the actual return
   type is quadword and /VAX and not /VMS_DEVELOPMENT is specified.

   You cannot specify the qualifiers /ALPHA_AXP and /VAX together.
   You cannot specify the qualifiers /B64 and /VAX together.