Some did, some didn't. Some used it as an attribute bit to turn bold on/off on ye olde green screen dumb terminals. Thank goodness those days have long since passed.
Life is good, Maurice
... A Møøse once bit my sister ... --- GNU bash, version 4.2.45(2)-release (x86_64-unknown-linux-gnu) * Origin: Pointy Stick Society - Ladysmith BC, Canada (1:153/7001.0)