| ibuf | Input specific buffer |
| iobuf | The base I/O buffer structure |
| ipv4addr | IPv4 address structure |
| ipv6addr | IPv6 address structure |
| obuf | Output specific buffer |
| str | The basic string structure |
| str_sortentry | This struct is used to serve in lists of pointers into a string for sorting |
| striter | The basic striter data type |
1.3.8