Common Settings (Virtual Documents) This section provides the following reference information related to virtual documents. Settings for Business Services (Virtual Documents) – Provides reference information for settings of business services that handle virtual documents. Settings for Routing Processes (Virtual Documents) – Provides reference information for settings of EnsLib.MsgRouter.RoutingEngine business process, which you use to route most kinds of virtual documents. Settings for Business Operations (Virtual Documents) – Provides reference information for settings of business operations that handle virtual documents.