Locking may be done in solo or in unison with two or more dancers doing steps or handshakes together. A locker may smile while performing to emphasize the comical nature of the dance; other times, a serious demeanor will be maintained to place emphasis on technique. Other important stylistic features are waving of arms, pointing, walking stationary and grabbing and rotating the cap or hat. Don Campbell created the original freezes, incorporating his unique rhythm and adding gestures such as points and handclaps. Other dancers also adapted this style while creating other steps and moves.