mdocml(1) on FreeBSD
The text 5eceae1456fc, as FreeBSD 11.4-RELEASE, FreeBSD 11.3-RELEASE, FreeBSD 11.2-RELEASE shipped it.
format manual pages
Flags it lists
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-I -
-K -
-O -
-T -
-W -
-a -
-c -
-man -
-mdoc