+% boss damage

Simple questions, i didnt get a chance to answer myself
Say your weapon has +x% damage against bosses, is it applied directly to your damage, your range
or your skill's damage %, and if it's directly added to your damage, does it get added before, or after attack pots like
apples, ciders, etc.

It is applied directly to your damage so you will not see anything on your damage range about it. This is done after all buffs, attack pots, and damage multipliers (criticals, for example).

Edit: I am not sure about defense though. Maybe someone else has that answer. I would assume it is applied before that though...