| guessFileFormat | Automatically pick proper tape file format. |
| makeFileFormat | Setting tape file format/compression. |
| rtapeAdd | Add object to the tape. |
| rtapeAsList | Load the whole tape as a list. |
| rtapeFilter | Rerecord the tape dropping certain objects. |
| rtapeLapply | Iterate over tape, gathering results. |
| rtapeRerecord | Rerecord the tape. |
| rtape_apply | Iterate over tape, discarding results. |