CTRL would clear the 2⁶ bit. If any sufficiently primitive devices (electromechanical like the Teletype 33) had been made in the lower-case era, you'd probably

CTRL would clear the 2⁶ bit. If any sufficiently primitive devices (electromechanical like the Teletype 33) had been made in the lower-case era, you'd probably have got CTRL-; → ; and CTRL-{ → ;