USING NOTES OFFLINE
Through replication, Lotus Notes can keep a local replica identical with the application on the server, so you make changes once, but they appear in both places. Replication is a great tool to have when working with large documents or applications, since a local replica can open documents and views much faster than a server application can over a network.
Note: An application copy (created by clicking File > Application > New Copy) cannot be replicated.
Tips
Replication also lets users on various networks in a variety of (physical) locations share the most current version of information in an application. If you want to create a replica of a server-based application on a different server, ask your IBM Lotus Domino administrator for assistance.
Replica ID numbers