Chronicles Addendum is a blanket term for in-universe material that is original to the Paper Computer Games wiki. In other words, creators may add to this wiki their own encyclopedic content which is not sourced to any existing PCG. If so, they should cite Chronicles Addendum as the source of that information. For example, a creator may flesh out the backstory of one of his or her game's characters in their article on the wiki, even though that backstory doesn't actually appear in the character's games themselves.