Control-O: Vi. "Stop Talking." From The Character Used On Some Operating Systems To Abort Output But Allow The Program To Keep On Running.

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:control-O: vi. "Stop talking." From the character used on some
operating systems to abort output but allow the program to keep on
running. Generally means that you are not interested in hearing
anything more from that person, at least on that topic; a standard
response to someone who is flaming. Considered silly. Compare
{control-S}.
-- The AI Hackers Dictionary

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