[1] : Jargon File (4.3.1, 29 Jun 2001)

control-s vi. "stop talking for a second." from the ascii dc3 or xoff
   character the pronunciation /x-of/ is therefore also used. control-s
   differs from control-o in that the person is asked to stop talking
   perhaps because you are on the phone but will be allowed to continue
   when you're ready to listen to him -- as opposed to control-o, which has
   more of the meaning of "shut up." considered silly.


see also:
control-o 

[2] : The Free On-line Dictionary of Computing (27 SEP 03)

control-s
     
         or xoff, dc3, device control 3 the character
        with ascii code 19, used in software handshaking to
        temporarily suspend output until a control-q is received.
     
        jargon file
     
        1996-06-28
     
     
see also:
device control ascii software handshaking control-q jargon file 

Control-S >> C Words
Control-S, definition of term: Control-S
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