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 audiotool to play a sound file as a reminder of an appointment, as illustrated in the following scenario:
Karin opens her calendar manager and sets an appointment.
Karin clicks on an audio response button, which causes the soundtool to pop up.
Karin records her message; for example, "Bring the report."
When Karin's appointment reminder is executed, the calendar manager will start the audiotool and play Karin's recorded reminder.