I      The INDEX option creates an indexed  library  file
            of  type .IRL.  LINK-80 searches faster on indexed
            libraries than on non-indexed libraries.

     M      The MODULE option displays module names.

     P      The PUBLICS option displays module names  and  the
            public variables for the new library file.

     D      The DUMP option displays the  contents  of  object
            modules in ASCII form.