| OS | Man Page | Section | Hits |
|---|---|---|---|
| ultrix | mdoc-validate | 1 | 375 |
| xfree86 | mdoc-validate | 1 | 369 |
| minix | mdoc-validate | 1 | 359 |
| posix | mdoc-validate | 1 | 352 |
| hpux | mdoc-validate | 1 | 338 |
| suse | mdoc-validate | 1 | 334 |
| debian | mdoc-validate | 1 | 326 |
| plan9 | mdoc-validate | 1 | 306 |
| x11r4 | mdoc-validate | 1 | 304 |
| php | mdoc-validate | 1 | 253 |