A Neighborhood is a collection of NonStop Servers (Cluster), each of which has a running copy of Web ViewPoint Enterprise. Each Server in this model is called a Resident. Each Resident holds information (e.g. IP address / name) about all other Residents in its Neighborhood.
Web ViewPoint Enterprise connects to each Resident directly (Expand is not used), and in doing so learns about all other Residents/neighbors. It is therefore able to retrieve information from all Residents and display content on one or more Browser Windows as its user requires.