From a double pass thru, one quarter tag, trade by or three quarter tag formation: Those in the center (facing couples or wave) do the "Anything" call while the others Quarter Right, Left, In (face partner) or Out (turn back on partner) depending on the call and walk or promenade halfway around the set. Finishes in various parallel line and wave formations depending upon the call.
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.
