So. Chatham, Mass. Bob-- "Applicon made CAD/CAM systems, very good ones too." Thank you! My older son sent me this link http://www.classiccmp.org/pipermail/cctech/2003-August/017875.html today, apparently from a Google search. I worked several missions at Applicon, Burlington, 1969-1985; recall the type system you describe very well. "I used to work on these things!" Didn't we all. :^) Forgive me if your name doesn't come to mind after 25 years. Please remind me of your location, department. Best regards. --Bill