Z:gnu-man-db-manpages--d21fbb-Enable warnings from I=3Cgroff=3E./en

Enable warnings from I. This may be used to perform sanity checks on the source text of manual pages. I is a comma-separated list of warning names; if it is not supplied, the default is "mac". See the \(lqWarnings\(rq node in B for a list of available warning names.