2017-12-01 8:51 GMT+02:00 Hakki Dogusan <email@example.com>:
> I think these magic numbers come from printer column sizes;
> normal mode:80 ch, condensed mode:132 ch.
> (for continuous form dot-matrix printers)
Older than that. In the 1960s, typewriters could do 8 inches wide
(leaving ¼in margins for the sprocket holes), giving 80 characters
at 10cpi (known as pica) but some typewriters did 96 characters
at 12cpi (known as elite). Punched cards had 80 columns.