mandoc: args.in:28:2: WARNING: skipping empty macro: Xr
mandoc: args.in:30:2: WARNING: skipping empty macro: Xr
mandoc: args.in:1:5: STYLE: Mdocdate missing: Dd June
mandoc: args.in:22:13: STYLE: no blank before trailing delimiter: Xr ... 1)
mandoc: args.in:24:2: WARNING: missing section argument: Xr echo
mandoc: args.in:26:2: WARNING: missing section argument: Xr echo,
mandoc: args.in:26:9: STYLE: no blank before trailing delimiter: Xr echo,
mandoc: args.in: STYLE: RCS id missing