a 'bookmark for future review' feature in the sat practice test section will be really helpful

Hello! I realize we can revisit the questions after completing a test to review them, but bookmarking a specific question will make it easier to compile the difficult questions together. There are many times that I come across questions about topics I'm not focusing on at the moment of the test or I've found a particular technique in the answers useful, and bookmarking them for future review would be immensely helpful! I hope such a feature gets implemented