From The Free On-line Dictionary of Computing (19 January 2023): control-S XOFF <character> (XOFF, DC3, Device Control 3, ASCII code 19). A character used in software handshaking to temporarily suspend output until a control-Q is received. [Jargon File] (1996-06-28)
control-S XOFF
<character> (XOFF, DC3, Device Control 3, ASCII code 19). A character used in software handshaking to temporarily suspend output until a control-Q is received.
[Jargon File]
(1996-06-28)