well, from my past experiences, reading someone else's code is a big task for me, everytime. Like people who posted before me, vi hierarchy is a good place to start. when in doubt about the functionality of a vi, run it in debug mode, go step by step, record information you think it is important. At the beginning, focus on the main flow of the program, set aside less important feature, such as fileIO, conversion, calculation, DAQ VIs. In another word, try to simplify the program.
Joe Y. Guo
Roush Industries, Inc