[stack] How the Interpreter Works

I've written a short article about how the Cat interpreter works on
the Cat wiki http://code.google.com/p/cat-language/wiki/HowTheInterpreterWorks.
I am hoping that it will help other people who are interested in
learning how to construct interpreters and compilers.

Any comments or suggestions would be much appreciated!

Christopher Diggins
http://www.cdiggins.com