A major update to ctcs is available for anonymous ftp from triples.math.mcgill.ca in /pub/barr under the name ctcsupdate. Both the tex (latex) and dvi files are available. The tex file requires diagram.tex and bezier.sty to run. diagram.tex is in /pub/texmacros. Michael Barr +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++