From Facing Couples. 
-  Circle Left the first given fraction and Step To A R-H Wave; 
-  Arm Turn the second given fraction or do the anything call.      
| Circle By 1/2 By 3/4: 
 | 
| Circle By 1/4 By Recycle: 
 | 
Notes:
- 
 The anything call is done from a Wave, not from Facing
    Couples.  This makes a difference for calls such as Recycle or Single Wheel. 
- 
 In the past, some callers believed that the default fractions
    were 1/4 and 1/4 and would simply call 'Circle By'
    without any fractions expecting the dancers to do a Circle By 1/4 By 1/4.
    This usage is considered inappropriate today. 
Single Circle By fraction By fraction | anything [obsolete]:
 Single Circle the first given fraction and Step To A R-H Mini-Wave; Arm Turn the second given
  fraction or do the anything call.  Single Circle By was
  voted off the C1 list several years ago.
Mirror Circle By fraction By fraction | anything [C3A]:
 From Facing Couples.  Circle Right the first given fraction and Step To A Left-Hand Wave; Arm
  Turn the second given fraction or do the anything call.
  This call has historically been known as Reverse Circle By.