16. The system of claim 15 , wherein the logic further causes the system to perform at least the following: provide a user option for filtering the first annotation and the second annotation; receive a selection of the user option; and remove at least one of the following, according to the selection: the first annotation and the second annotation.
16. The system of claim 15 , wherein the logic further causes the system to perform at least the following: provide a user option for filtering the first annotation and the second annotation; receive a selection of the user option; and remove at least one of the following, according to the selection: the first annotation and the second annotation. 17. The system of claim 16 , wherein the second electronic document is a legal document and wherein the user option for filtering the first annotation and the second annotation comprises an option for filtering according to at least one of the following criteria: jurisdiction, practice area and legal topic, a subsection of the second electronic legal document, date, and legal validity signal.