From parallel waves: All arm turn half, new centers arm turn 3/4. Those in the center wave do a Left Swing Thru and Step Thru as the outsides individually turn in toward the center. Finishes in eight chain thru formation (with some adjusting).
Skeedaddle Out: Like a Skeedaddle In except that at the finish, outsides turn their backs to the center. Finishes in completed double pass thru formation (again with some adjusting).
Fred Freuthal 1971
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.