From parallel waves: All Split Circulate one half (momentary four dancer wave flanked by a couple in single file; i.e., twin diamond formation). Ends of the wave do a Single Hinge as the lead outside dancers do a "Run" (to squeeze between those who did the Hinge) and the trailing outside dancers Circulate once. Finishes in parallel two faced lines.
Paul McNutt 1976
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.