From a squared set: A means of getting all couples standing one behind the other facing the same direction, ordinarily toward the caller. No. 1 Couple Line the Square--Number One does a California Twirl to face out. No. Two couple wheel left to stand behind No. One and No. Four wheels right to stand behind No. Two. Couple No. Three stands pat.
Jack Murtha 1967
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.