The exact words used to deliver this call were never standardized.
The phrase "Square Thru" might or might not be used.
Everyone start a Square Thru. Original centers go either 2 or 3
hands, depending on the starting formation, until they are ends of
lines looking out. They are finished. Original ends do likewise,
but instead of the last hand (they should be as if centers of facing lines
at this point) they take the <anything> call. That call is often
a Square Thru of some additional number of hands. They start that Square
Thru with their available hand.
\syhlines{b4e,g4w,b1e,g1w}
\syhlines{b3n,g1n,b4n,g2n}
before Mixed up Square Thru, new centers go 3 more hands