Replaces an existing record in a file.
| Opcode | Operation | File Types |
|---|---|---|
| F4 | REWRITE | L S R I |
| cfd-relative-key | Relative record number (R) |
| fcd-current-rec-len | Current record length |
| fcd-record-address | Pointer to the record area |
| fcd-file-status | File status |
| fcd-reladdr-offset or fcd-reladdr-big | Relative byte address |