To compile S, you need the System V version of the m4 macro processor. It is a big improvment on the Version 7 m4 distributed with Berkeley. I think older versions of S sent m4 along for the ride, but no longer. -- Gary Perlman Wang Institute Tyngsboro, MA 01879 (617) 649-9731 UUCP: decvax!wanginst!perlman CSNET: perlman at wanginst