regress/mdoc/Sh/before.out_lint

   1 mandoc: before.in:3:5: BASE: operating system explicitly specified: Os OpenBSD (OpenBSD)
   2 mandoc: before.in:1:5: BASE: Mdocdate missing: Dd July (OpenBSD)
   3 mandoc: before.in: BASE: RCS id missing: (OpenBSD)
   4 mandoc: before.in:4:1: WARNING: content before first section header: text