From parallel waves (centers do a right hand two hand star full around etc.), quarter tag formations (using "Web" stars), Alamos, thars and wrong way thars: (By a series of arm turns, form stars and then return to the original formation): Half arm turn, then 3/4, star full around then arm turn 3/4 to original formation.
NOTE: From parallel waves, this is a Spin Chain Thru with the centers in the wave across the set doing a full arm turn instead of a half arm turn.
Chuck Besson 1969
This definition is from The Handbook of Modern Square Dancing by Jay King.
It is provided here for informational and educational purposes only.