Functions are abbreviated as follows:
| Abbreviations | Call to DBCHCL for this function |
|---|---|
| CON | Connect |
| RSUP | RunStartUp |
| IRQ | Initiate Request |
| CRQ | Continue-request |
| IWPF | Initiate With Protocol-function |
| REW | Rewind |
| ERQ | End Request |
| ABT | Abort |
| DSC | Disconnect |
| CMD | Command |
| FET | Fetch |