That should have been: In fact, I think the prof. told us he preferred us to also write down fortran code and debug before going to the lab. Brian Kelsay >>> "Brian Kelsay" 02/11/04 08:48AM >>> In fact, I think the prof. told us he preferred us to also write down and debug before going to the lab. You could debug in your head or on paper. I did this in my dorm room and then went and typed in the program. Usually I would only have one or 2 bugs or non at all after doing this kind of prep. Spelling errors (syntax error) and bad typing in general were the biggest culprits. Brian Kelsay