From a squared set: Designated actives give a right to opposite and pull by then Quarter In (The call will have been "Boys", "Girls", or "All" Shuffle the Square) and those indicated by the call will Zoom. Centers then give a left, pull by and Quarter In and give a right, pull by and Quarter In where those indicated by the call will Zoom again. Centers now give a left and pull straight by. Finishes in eight chain thru formation. NOTE: Whenever a (temporary) double pass thru formation is set up, the designated people will Zoom.
Billy Brooks 1975
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.