From parallel waves: All do a single hinge, then split circulate and Scoot Back. Finishes in parallel waves. NOTE: The author's explanation originally was: Ends trade and roll to end facing the center of new parallel waves. Centers run and then roll and finally turn thru with the other center straight across to walk straight ahead to face out in the new waves. From left-hand waves, the center's final move will be a left-turn thru.