Feel free to email me about any questions you might have about Mathpad. In particular, I will try to answer any question you might have about how to specify a complicated expression. Either I'll give you an answer or admit Mathpad can't handle this.
As with all programs, Mathpad has bugs. I strongly encourage you to submit such bugs. As inducement, if you are the first to submit a particular bug, I will mail you free of charge the standard program. If you've already purchased the program, I will mail you the purchase price. I am the sole arbiter of what constitutes a bug, versus an undesirable feature. Also I must be able to reproduce the bug. Happy bug hunting.
I am a long time math and computer science teacher, located in Athens, Ohio (USA). When I'm not teaching or working on software, you can find me at the local golf course. Compared to golf, writing software is really a breeze. But there are similarities; once you get hooked, you just want to keep doing it. I hope you enjoy Mathpad as much as I enjoyed writing it.
John Gillam