positive etch method

[R.G. Keen]

>I still haven't figured out what CAD tool to buy, I use
>Mentor Graphics ($250k min) at work. I can't deal with
>pin-count limitations of some of the tools, and most
>of the demos have severe limitations. I might go with
>Microcode's Circuitmaker and Traxmaker a little under
>$600 for the combo..

Traxmaker is Easytrax, slightly modded. Protel sold the 
source to Microcode for integration in that package.