From eight chain thru formation or parallel waves: All Swing Thru. Ends U-turn back and Couples Hinge. Center couples Hinge as the two end couples Circulate to form a line of eight. In each half of the line do a couples Trade, then center couples Hinge as end couples Circulate to form a line of eight. Each pair of end couples does a Couples Hinge to form two parallel two faced lines. The centers of each line Trade and ends U-turn back then all arm turn half. Finishes in waves (original set up).
Mac Parker 1971
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.