With skills, is the roll 2d6 + attribute rating + skill rank, or is it 2d6 + skill rank, and attribute rating merely serves to show your maximum ranking in the skill?

It seems like it would be be former, but that's never really made clear.

Overall though, good work. I have a campaign idea for this that I might want to try once I finish this semester, and making me feel like putting in the effort to learn a new system is an impressive feat.