 It owns and publishes the official rules of the two sports and engages in promotional activities.The Professional Billiard Players Association (PBSA) was founded in 1946, and, after some years of inactivity, was revived in 1968 and renamed the World Professional Billiards and Snooker Association in 1970.It owns a 26% share of World Snooker, which organises the professional Snooker ranking circuit events.