control-q
Free On-line Dictionary of Computing
control-Q DC1 XON
<character> (XON, DC1, Device Control 1, ASCII code 17). A control character, used in software handshaking to resume output after a previous control-S. [Jargon File]
(2020-03-01)
The Jargon File
control-Q vi.
“Resume.” From the ASCII DC1 or XON character (the pronunciation /X-on/ is therefore also used), used to undo a previous control-S.