Reading the "Sweeping" enhancement from the Magic of Faerun I can't figure out the "+4 Str" bonus it infers when making a trip attack. Is it a normal +4 Str bonus (ie - add it to my Str score and use that Str bonus in my check) or is it added to the result of my check (ie - roll d20, add normal str bonus, then add 4). I know this should be simple, but i can't wrap my head around it. bah.