When reviewing our study sets, it should be possible to decide the number of Q-cards we wish to review from all the study sets we've generated in a single session. For instance, if I have a study set with 90 Q-cards, but I prefer to be quizzed on the initial 30 Q-cards exclusively, I should be able to pick those 30 Q-cards and focus solely on them. This approach allows us to study in segments, and when we feel prepared, we can then test ourselves on all 90 Q-cards.