An Offset FORMATION is a formation which has been divided
into two equal sub-formations that have been shifted some amount
relative to the dividing line.
In Offset Lines | Waves, Centermost dancers should reach forward or
backward (if possible) to touch hands with the adjacent dancers in their
distorted Line. This helps identify who is working with whom.
At C2, the caller generally restricts Offset FORMATION
calls to easy calls which are not shape-changers.
If the given call is a shape changer (that is, you are
unable to end on the same set of footprints because the original 2 x 4
has rotated by 90°), then retain the Shear Line and the Shift Direction.
See Appendix A for a discussion on Shape-Changing.
Parallelogram FORMATION [C2].
Parallelograms and Offset Lines | Columns (by Keith Rubow)
Parallelograms and Offsets Notes and Diagrams (by Charles Young)