When I want to test certain steps in the bound, it seems I must go through the entire bound until I reach the step I wish to test. I have it set to “Flexible” mode, so there should be a menu of steps somewhere to choose from (according to your explanations). But this is nowhere to be found, whether in regular mode or test mode.
As a bound gets longer, one needs to be able to quickly access the newer steps for testing. But we have to go through everything, including entering answers for quiz questions, in order to reach the steps near the end of the bound.