Ok guy i will tell you how thes work.
First thang it not the sig your thank of it a sig of a address that wright to the real address.how you would use this is to copy and paste them in to olly under binary search with wil take you to the address that wright to the real one..The ?? are where if there was a update they would change so the ? mean that it could be any number so that if there is a update you just paste thow is to olly and bame it will take you to the adress that wright to it so that will mean that you can update address realy fast this way it is the same skill they used in gunz to make there dll autoupdate(man that was one hell of a run on lol...).