The ToolTalk Document and Media Exchange Message Set also allows an application to use other multimedia applications to extend its features or capabilities. For example, a Calendar Manager can be extended to use the Audio Tool to play a sound file as a reminder of an appointment, as illustrated in the following scenario:
Shelby opens her Calendar Manager and sets an appointment.
Shelby clicks on an Audio Response button, which causes the Audio Tool to start.
Shelby records her message; for example, "Bring the report."
When Shelby's appointment reminder is executed, the Calendar Manager will start the Audio Tool and play Shelby's recorded reminder.