1mandoc: O1.in:11:6: WARNING: invalid escape sequence: \O5
2mandoc: O1.in:12:7: WARNING: invalid escape sequence: \O(52
3mandoc: O1.in:13:7: UNSUPP: unsupported escape sequence: \O[5dummy]
4mandoc: O1.in:14:6: WARNING: invalid escape sequence: \O6
5mandoc: O1.in:15:6: UNSUPP: unsupported escape sequence: \O0
6