From a Line or a Diamond.
Centers U-Turn Back (toward each other) as Ends do their part of Fan the Top.
Usually ends in a Diamond or a Line.
Note: if both Ends start facing the same direction, they meet at the
same spot in a R-H Mini-Wave.
Grand Erase [C4]:
From applicable formations (usually a Tidal Line).
Very Outside 2 dancers
Counter Rotate 1/4
as the others U-Turn Back.