White spaces
A white space must intervene between the delta and the first ridge count. If no such interval exists, the first ridge must be disregarded.
Recurves
A recurve must have no appendage abutting upon it at a right Angle between the shoulders and on the outside. If an appendage abuts it, it is considered spoiled and one must look to the next loop outside to locate the core.
Interlocking loops
Sometimes loops interlock. These are considered as one loop.
