mandoc: invalid.in:9:1: WARNING: skipping empty request: define
mandoc: invalid.in:15:1: WARNING: skipping empty request: define bruch
mandoc: invalid.in:21:1: WARNING: skipping empty request: undef
mandoc: invalid.in:27:1: WARNING: skipping empty request: tdefine
mandoc: invalid.in:33:1: WARNING: skipping empty request: tdefine