Trainees who reached the top of the Wall were transported to this Nexus chamber automatically, at which point their Maintainer suit was removed. The room also contains a Book machine terminal which periodically reveals a single Linking Book. Because the Training Center which houses the Wall rotates, this Nexus is designed to only allow users to access the Book for a short period of time, to prevent them from linking into the wrong room. A small light appears over the Linking Book, indicating which team's room (yellow or purple) the user would be linking into when they used the Book. A monitor off to the side shows the remaining Wall players and the Wall's status.