dgnsd is Graphic Notifications Server and it is a part of Operation Manager. It is a daemon process which works all the time the system is running and it expects requests from clients, which want to display a notification about a running case as a graphic window or to play a sound file or read a text. Next, such notifications are forwarded to registered graphic clients, i.e. the clients that can display notifications as graphic windows or play sound. Responses received from graphic clients are forwarded to a client that sent the notification. A typical client that sends such notifications is dsi program, and a typical client, that requests about playing sound is sndc program. A graphic client, that can display graphic windows with such notifications and can play sounds is xdgnp application.