VMS Help CC, Messages, UNKEXTMOD  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        Unknown extern model.  Pragma is ignored.

 Description    The compiler was unable to parse a #pragma
                extern_model directive.  The extern_model must be an
                identifier that specifies one of the valid extern
                models.  The directive will be ignored.

 User Action    Correct the directive.