mandoc: fourargs.in:2:25: ERROR: skipping excess arguments: Dt ... bogus
mandoc: fourargs.in:3:5: BASE: operating system explicitly specified: Os OpenBSD (OpenBSD)
mandoc: fourargs.in:1:5: BASE: Mdocdate missing: Dd February (OpenBSD)
mandoc: fourargs.in: BASE: RCS id missing: (OpenBSD)