| Number | UpCalls | UpCalls | Description | Section | Page |
|---|---|---|---|---|---|
| &18 | DriveAdded | DriveAdded (&18) | A filing system may be available on a given path. | Drive Hints | |
| &19 | DriveRemoved | DriveRemoved (&19) | A filing system is no longer available on a given path. | Drive Hints | |
| &19 | MediaSearchEndMessage | MediaSearchEndMessage (&19) | The media request has been satisfied; display the message supplied | UpCall 19 |