I am making an RPG in which the central area is a large city with most of the quests, roads to the other towns, and shops for turning your resources into items. In the RExxar Campagn, Blizzard used little glowy blue walls that when your heroes crossed them, they were transfered to the zone/dungeon. I cannot figure out how to do this with the Campaign Editor, and would like someone to explain what I would need to do to make "zones within zones".