From Parallel Two-Faced Lines or other applicable formations.
Leaders work away from the Center of the Set to do a 
  Turn To A Line 
  as Trailers 1/2 Circulate.
Parallel Two-Faced Lines end in an As Couples Wave.
 
 |   | 
 
 |  before Flare Out To A Line |   | after
  |   
 | 
Notes:
- 
Flare Out To A Line can also be done from Promenade.  Those
    designated act as Leaders, others as Trailers.  See the entry on
    Link Up [C3A] 
    for a discussion on how to do calls from Promenade position.
 - 
From Parallel Two-Faced Lines, Flare Out To A Line is equivalent
    to Once Removed (or Couples Twosome) 1/2 Zoom.
 
Single Flare Out To A Line [C4]: 
1/2 Zoom.
 
 |   | 
 
 |  before Single Flare Out To A Line |   | after
  |   
 | 
Cross Flare Out To A Line [C4]:
 From Parallel Two-Faced Lines.
  Leaders Any Shoulder Turn & Deal and Veer in flow direction to become
  the Outside Couple of a Tidal Line as Trailers 1/2 Circulate.
  Cross Flare Out To A Line is equivalent to Leaders Couples Twosome
  Trail Off as Trailers 1/2 Circulate.
 
 |   | 
 
 |  before Cross Flare Out To A Line |   | after
  |   
 | 
Cross Flare Out And anything [C4]:
 From Parallel Two-Faced Lines.  
  Cross Flare Out To A Line; Center 4 do the anything call.