On Sun, 15 Sep 2019, Clem Cole wrote:

> The order I learned them was -mm {PWB}, -ms {V7}, -man {V7}, -ms {Tek}, 
> -me {UCB}, -mS {MSCP}, -man {UCB version}.   I feel into -ms with a 
> couple of macros from -mS (.Li/Le for lists which were similar to MM's) 
> for big documents, and the UCB -man for really simple things.   It 
> becomes a 'less is more' sort of thing - -mm and too complicated and I 
> was not writing BTL tech memos, and after I did not my thesis, I did not 
> need Eric's work (which was perfect for a UCB thesis).

For me it was ROFF (V5), -man (V6), -ms (V6).  These days I don't need 
markup any more; the most complicated things I write are letters using 
TextEdit on the Mac, and C/Perl/etc with VI :-)

Actually on the odd occasion I need markup it's "groff -ms -Tps" on
the FreeBSD box.

-- Dave