When you import an image as a flash card you can’t write on it at all with a pen. While you could edit the image before importing it, it would help if you could import say a labelled diagram of a cell and you could blackout one individual label and put the label as the answer on the other side of the flash card. This could help you with one diagram making easily 6+ Flashcards in a minute directly from lecture notes making it a lot easier.