| Bi_dump | |
| Bi_inbuf | Input buffer |
| Bi_io | Input and output functions for the Biniou serialization format |
| Bi_outbuf | Output buffer |
| Bi_share | [not for general use] |
| Bi_stream | Streaming utilities (experimental) |
| Bi_util | Error handling etc. |
| Bi_vint | Vint: variable-length representation of integers |