From the blog "MCGUFIN"
Sneak peek at the 'Armor Coverage' system in MGF. The system can automatically determine:
Cover - How much of an area is actually covered in armor.
Fit - How tightly, on average, that armor sits to the skin. (Recent addition. Still tweaking it). 'n/a' for fit means there wasn't enough coverage in the area to provide an accurate fit value.
No messing about with keywords etc involved. Information is parsed from the mesh itself.
May or may not make it into the final product