3.1.3 AsyncUI Server Details
The AsyncUI notification type allows for a print-server-resident notification source to request the following:
The display of an informative alert on a client machine.
The client sends user input requested by the alert back to the server.
The client executes code that is resident on the client machine.
The AsyncUI notification type MUST use the notification type identifier value AsyncPrintNotificationType_AsyncUI (section 2.2.1).