[bobochan]

I just re-read Xah's notes and all of that rings a bell, but off of comp.lang.lisp Erik could be incredibly kind in helping other programmers. I was working my way through an early edition of _A programmer's guide to Common Lisp_ by Deborah Tatar and got absolutely stumped on the chapter on macros. Erik worked with me over email until we actually found what appeared to be a typo in the example source code and was incredibly patient with my dumb mistakes.