From applicable formations.
Walk forward in an arc, for a total of fraction of a
  circle, around the flagpole center of the set, keeping the
  same distance from the center of the set.
Notes:
- 
Counter Rotate cannot be done if a dancer is facing directly
    toward (or away from) the flagpole center of the set.
 - 
If no fraction is given, assume 1/4.
 - 
When starting from a symmetric setup, and everyone is active, the
    ending formation for Counter Rotate 1/4 is the same as
    the starting formation but rotated by 90°.
 - 
You may have to vary the distance from the center of the set to allow
    for square breathing if not everyone is active for the Counter
    Rotate.
 - 
You can try visualizing Counter Rotate 1/4 as if all of
    a sudden the formation was placed upon an empty merry-go-round, with
    the center of the square being the center of the merry-go-round, and
    somebody pushed the merry-go-round 1/4 of a circle (clockwise
    or counter-clockwise, whichever would cause you to move forward).
    Your formation would remain the same, you would still be the same
    distance from the Center, but your facing direction would have changed
    90°.  Note that some dancers might be on a merry-go-round
    which is turning in the opposite direction from yours.
 
  
 
 |  This is the starting formation for each of the following: |  |   |  
 
 |   | 
 
 |  after Counter Rotate 1/4 |   | after In Your Block Counter Rotate 1/4 |   
 | 
Split Counter Rotate fraction [A2]:
 Split the formation into 2 equal sub-formations by drawing an imaginary line 
  bisecting the long axis.  Dancers in each sub-formation walk forward in an arc for a total of
  fraction of a circle, around the flagpole center of the sub-formation,
  keeping the same distance from the center of their sub-formation.  From
  Parallel Lines or Columns work in each Box; from Diamonds
  work in each Diamond; from a 1 x 8 Line work in each Line.
Trade Counter Rotate [C4] (Jack Lasry 1973):
 From applicable formations.  As one movement, Counter Rotate 1/4 & Spread.