VMS Help FORTRAN, /BLAS, INLINE  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  Controls whether inline code can be generated for references to the
  BLAS Level 1 routines, as long as Compaq Fortran 77 can determine
  that it is safe.

  If INLINE is specified, but Compaq Fortran 77 cannot generate inline
  code, it maps the call to the appropriate VMS Math Library or
  Compaq Extended Math Library routine.

  If NOINLINE is specified, no inline code is generated; references
  can only be mapped to the OpenVMS Math Library (unless NOMAPPED is
  in effect).