Yes, I always wondered why there's no such (Update: root-)namespace yet. But let me suggest PerlMonks as the CPAN root namespace (if that is legal), leading to PerlMonks::Tk::PMedit or PerlMonks::PMedit since a lot of PM specific modules might not belong into the Tk-category. Some weeks ago, I dusted off some scripts from the Code Catacombs which might find their way into PerlMonks::XP some day...