| OS | Man Page | Section | Hits |
|---|---|---|---|
| minix | mdoc-validate | 1 | 189 |
| xfree86 | mdoc-validate | 1 | 185 |
| ultrix | mdoc-validate | 1 | 183 |
| x11r4 | mdoc-validate | 1 | 173 |
| suse | mdoc-validate | 1 | 171 |
| posix | mdoc-validate | 1 | 171 |
| debian | mdoc-validate | 1 | 159 |
| hpux | mdoc-validate | 1 | 151 |
| php | mdoc-validate | 1 | 149 |
| plan9 | mdoc-validate | 1 | 148 |