You can bet your last dollar that Andy, who was also a close cyber-friend of mine for many years... will pass it on and to Alan who is a real genuine nice fellow....I think we may not see and answer unless Alan sees this message. Alan knows how much I have helped high school kids to come to grips with geology. I have more than once asked Alan to send a copy of his original DOS program to young kids which he has graciously done...and I have thanked him...but to expect an answer in this case....I don't think so and IF they do come in and say something I would appreciate bit of side comment!
Bob