The Korean term tul, meaning pattern, is used to refer to sequence of techniques used in Taekwon-Do.  A tul is performed either with or without the use of a weapon. In traditional dojangs (training halls), tul are used primarily for interval training that is useful in developing proper kinetics and mental and physical fortitude. Tul may resemble combat, but are artistically non-combative and woven together so as to be an effective conditioning tool. One's aptitude for a particular tul may be evaluated in competition and during testing to show the student is ready to advance.

A practitioner of Taekwon-Do is responsible for knowing their current pattern(s) as well as all the pattern(s) they have learned up till that point.  At higher rank testing the judges can request the student testing to perform any pattern from their rank and below.