The applications to the Shotokan Karate Kata that coloured belts learn - Heian Shodan, Heian Nidan, Heian Sandan, Heian Yondan, and Heian Godan. The self-defence techniques shown in this book represent what happens at a realistic distance against realistic kinds of attack, not the usual set of complicated combinations using Karate techniques that people don't really use in the street. The moves of the kata are shown used as throws, joint-locks, and immobilisations as well as strikes.
This guide is also useful to those who study the Pinan kata as the applications are universal and cross style boundaries.