These feature bits control options for keeping and discarding messages after users play them. Include feature bit 050 (Play messages) for all keep and discard options. Include 053 (Keep messages) and/or 055 (Discard messages) for any mailbox that can receive messages; otherwise, the user cannot play more than one message during a single session.
| Bit | Description | Required | Incompatible |
|---|---|---|---|
| 053 | Keep messages (Master) | 050 | |
| 054 | Auto-keep messages | 050, 053 | 056 |
| 055 | Discard messages (Master) | 050 | |
| 056 | Auto discard messages | 050, 055 | 054, 227 |
| 145 | Message stays in original queue | ||
| 227 | Undelete last message with * key | 050, 055 | 052, 056, 089 |