On 14/05/2018, Dave Horsfall <dave at horsfall.org> wrote (in part): > I had a boss once who demanded that we learn -mm; for some reason I still > preferred -ms, as it somehow seemed more "natural", and I still use it to > this day (well, when I'm not using the Mac, that is). Why not? The Mac has it: /usr/share/groff/1.19.2/tmac/s.tmac