| OS | Man Page | Section | Hits |
|---|---|---|---|
| xfree86 | mdoc-validate | 1 | 439 |
| ultrix | mdoc-validate | 1 | 414 |
| hpux | mdoc-validate | 1 | 408 |
| posix | mdoc-validate | 1 | 407 |
| minix | mdoc-validate | 1 | 406 |
| suse | mdoc-validate | 1 | 373 |
| debian | mdoc-validate | 1 | 370 |
| plan9 | mdoc-validate | 1 | 346 |
| x11r4 | mdoc-validate | 1 | 342 |
| php | mdoc-validate | 1 | 291 |