Excellent visual self paced software program. Concerns / recommendations: It would be nice if one could avoid waiting for the countdown clock as some areas/ topics may be well known by the participant. For the module tests I would have liked the option of knowing which questions I answered incorrectly so that I could further study the particular areas. Similarly, for the final exam I would have liked the option of proceeding with the the questions for which I was certain of the answers and then go back and allocate more time to the remaining. I think, too, that most participants would like the opportunity to "double check" answers for the entire test before submitting for evaluation.