From two lines (facing in or out) or parallel two-faced lines: Couples do a half wheel across. The outside couples finish as in a wheel and deal. The inside couples do a full wheel across in the center and then bend the line. All two-faced lines and lines facing out finish in double pass thru formation. Regular lines facing in finish in trade by formation.
Ron Schneider 1969
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.