10.3.4-4 Indicating Priority of Received Messages

Where incoming messages will have different degrees of urgency, recipients should be notified of message priority and/or other pertinent information.

Additional Information:
Notification of urgent messages might be routed to a special area of a user's working display for immediate reference, whereas notification of routine messages might be deferred, or perhaps routed to a printer for review at the user's convenience. If incoming messages are queued so that their arrival will not interrupt current user tasks, then users should be advised when an interruption is, in fact, necessary.