http://4ynqnnkbfkq327lqr4kfj2udaki224h4isbpjwj5tagxqcgzu7rv6oqd.onion/manual/index.html
Depending on which tag has been reported, the line may contain
additional arguments which tell you, for example, which files are
involved. If you do not understand what a certain tag is about, you can specify
the -i option when calling Lintian to get a detailed description of
the reported tags: $ lintian --info --tags appstream-metadata-in-legacy-location etm_3.2.30-1.1_all.deb
N:
W: etm: appstream-metadata-in-legacy-location...