Predefined part list information box (field) for the edging material code
If this box is set the program looks for the edging code for the left width edge in this box rather than using the Edge column (quick edging).
Using the information boxes for the edge codes allows for full edge codes rather than the single letter codes of the Edge column.
The width edges means the edges associated with the width column in the part list.
Note - at the Information box tree this box is in the Edging branch