Hello, I am writing to let you know that I am working on a project to use Hat ARTs to trace programs written in a pure functional subset of Python. The goal is to let students in the introductory computer science classes at my school (Haverford College) generate traces of their programs to help with debugging and, hopefully, understanding what the programs do. This introductory course uses Python first with a functional style and then with an imperative style, and debugging/visualization tools are sadly lacking in the first half. My plan is to first write a program to transform a subset of Python for tracing, as hat-trans does, and then perhaps work on new GUI tools for viewing traces and perhaps add Eclipse integration, since the classes here use Eclipse. Thanks to all of you who have done work on Hat and made it available to us. I would appreciate any ideas or suggestions you might have, or any information you have on other projects like this. If you're interested, I will hopefully have some GUI trace-viewing tools to contribute to Hat in a few months. Noah Lavine