I have an apprentice I'm trying To schedule for the Texas SBCCI-ICC standard journeyman exam next month. LASERGRADE now offers the test on a electronic format,...I'd like to know if the format is user friendly, compared to the same Pencil-Paper test.... Will he have the option of passing a question and or going back to change a answer?...Also,,,,Are the graphics (detail drawings)easy to understand?...Thanks,.. Joseph