The READPREV function is supported.
| Operand | Support |
|---|---|
| CONSISTENT | Validated |
| DATASET (data-value) | Full |
| FILE (data-value) | Full |
| INTO (data-area) | Full |
| KEYLENGTH (data-value) | Full |
| LENGTH (data-area) | Full |
| RBA | Full |
| REPEATABLE | Validated |
| REQID (data-value) | Full |
| RIDFLD (data-area) | Full |
| RRN | Full |
| SET (ptr-ref) | Full |
| SYSID (data-value) | Validated |
| TOKEN (data-area) | Full |
| UNCOMMITTED | Validated |
| UPDATE | Full |
| XRBA | Validated |