At my Taekwondo school, we practice the traditional hyungs as created by General Choi. After reviewing several materials for WTF practitioners and reading books on the history of Taekwondo, I'm left wondering what are the primary differences between the ITF-style hyungs and the WTF poomsae are. Specifically, is one more kick intensive? Stance intensive? What are the key characteristics that differentiate the two styles of pattern (if any!)?