Quote Originally Posted by Cespenar View Post
I believe it adds your bonuses to the roll itself, rather than subtracting them from your Thac0. So, when you see something like 12 + 4 = 16: Hit, that +4 is supposed to be the sum of your bonuses. I think.
But my combat rolls would be something like 12+3 = 15, and those 3 come from longsword specialization.