Chamfer face used as reference to measure chamfer first or single length.
The first length or the single length, depending on the way the
chamfer is defined, is measured on the reference face from the
edge to be chamfered.
This reference face is either the face selected or the face
determined by CATIA if the edge to be chamfered was selected.
The chamfer orientation defines whether to keep the face selected
or determined by CATIA as the chamfer reference face.
Values:
NO_REVERSE
The chamfer reference face is the face selected or determined by CATIA.