Gregory Satir helps develop online publishing tools in the Portland, Oregon, office of Electronic Book Technologies. He graduated with a B.S. in computer science from Brown University. Doug Brown is a consultant/contractor in Beaverton, Oregon. He has been developing software for circuit simulation, synthesis, and testing since 1977. Doug coauthored lex & yacc, another O'Reilly Media, Inc. Nutshell Handbook. He received an M.S. in electrical engineering from the University of Illinois at Urbana-Champaign in 1976.