An almost- ANSI C preprocessor by Martin Minow. It is shipped with X11R5 (contrib/util/cpp) because some systems don't have a working cpp .
It runs on VMS ( Vax C , Decus C ), RSX-11M , RSTS/E , P/OS , RT11 , A/UX and Apollo Domain /IX 9.6 and is highly portable.
(1994-11-03)