yes, but it's a big grid of the regions.
for example in \Custom\New Bavaria.GMC there is a section for each player;
So looking at 01belli
values, player01 has belli of 0 against region 1 (itself), 0.29 or 29% against region 2 and 28% against region 3.
Now try that on 3 stats, 32 regions, 32 relations, and you'll understand part of what I had to do to create "WWIII".
I usually did it in a spreadsheet first then exported to CSV to get the commas in place then cut and past into the .GMC file.