by fun do you mean "fun" sarcastically or was it really fun? lisping is not fun for me because I can't write it... it's fun to try and figure out though..
No sarcasm intended, it was indeed enjoyable to construct the program and satisfying to write the subfunctions to change the case of the string.
This was fun to write:
At the risk of inflating your ego anymore very nice work.
Thanks Alan, but I certainly hope I don't appear egocentric