| 1 | PostScript | 
| 1 | Gzipped PostScript | 
| 2 | 
| 1 | Commands | 
| 2 | System and library calls | 
| 3 | Devices | 
| 4 | File servers | 
| 5 | Plan 9 File Protocol, 9P | 
| 6 | File formats, misc | 
| 7 | Databases | 
| 8 | System administration | 
(The search is for the conjunction of the space separated keywords.)