9 | `1` | General User Commands |
10 | `2` | System Calls |
11 | `3` | Library Routines |
12 | `4` | Special Files and Sockets |
13 | `5` | File formats and Conventions |
14 | `6` | Games and Fun Stuff |
15 | `7` | Miscellaneous Documentation |
16 | `8` | System Administration |
17 | `9` | Kernel and Programming Style |