warn.out_lint revision 1.4 
1mandoc: warn.in:3:5: BASE: operating system explicitly specified: Os OpenBSD (OpenBSD)
2mandoc: warn.in:1:5: BASE: Mdocdate missing: Dd October (OpenBSD)
3mandoc: warn.in:9:8: WARNING: parenthesis in function name: sin()
4mandoc: warn.in:13:19: WARNING: comma in function argument: double y, double x
5mandoc: warn.in: BASE: RCS id missing: (OpenBSD)
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