Order of events

1. During development, you design Model A to export an interest (for example, AddedAnchor).
   
2. The client fetches the interest and adds it to the connection object.
   
3. The connection object connects to the Notifier (a TNotifier object) to establish a connection for notification. The connection object passes on the interest it received from the model to specify the notifications it will receive.
   
4. A change occurs in the model (an anchor marker is added) and the model creates a notification object (for example, a TAnchorNotification). This notification object contains a reference to the model (contained in the interest) in which the change took place, a copy of the interest (AddAnchorInterest), and a reference to the anchor marker added (AnchorReference).
   
5. The model sends this notification object to the notifier.
   
6. The notifier sends this notification object to all the connection objects that have registered with it as having an interest in this particular type of notification (AddAnchorInterest).
   
7. Each connection object takes the notification object and looks up the member function that it should call to handle the notification (for example, HandleAddedAnchor).
   
8. The connection object then passes the notification object to the member function of the appropriate client.