Kris reiterates the steps and reasoning behind his marking system, including how the markings are strategically placed in the upper left corner... a hint as to why... think about how a fan looks. After a quick review of the system, Kris quizzes your ability to read the markings... something that'll be important to practice by yourself after you make your markings. It should almost be instantaneous, so it's discreet and baffling as possible.