From Parallel Waves or other applicable formations.
Leaders Circulate as Trailers Star 1/2 (R-H Star from R-H Waves, L-H Star
from L-H Waves), and adjust to become Leaders in Wave (R-H Waves if
R-H Star, L-H Waves if L-H Star).
Parallel Waves end in Parallel Waves.
For Trailers: Ends become Centers, and Centers become Ends.
C3B definition: Leaders Circulate as Trailers
Diagonal Box Circulate.
The original definition of Bias Circulate had the Trailers make a
R-H (or L-H) Star, Turn it 1/2 way, and adjust to end in Waves.
Hence, it was possible for the caller to modify the amount to turn the
Star (this would probably be considered bogus today). Our definition
uses Diagonal Box Circulate as a convenient way to
express turning the Star. It is inappropriate to call
Bias Circulate from T-Bones such that the Trailers are in Columns
instead of Lines.
Bias Circulate is equivalent to Trapezoid
Split Trade Circulate
(except that from L-H Waves, a L-H Star is used).
Bias Trade Circulate [C4]:
From Parallel Waves.
As one movement, Bias Circulate and Spread.
Ends in opposite-handed Parallel Waves.
Alternative definition: Leaders Crossover Circulate as
Trailers Diagonal Box Crossover Circulate
(using a L-H Star when starting from L-H Waves).
Bias Trade Circulate
See also Diagonal Box CONCEPT [C3B].