$Output
gives the list of files and pipes to which standard output from the Wolfram Language is sent.
Examples
Wolfram Research (1988), $Output, Wolfram Language function, https://reference.wolfram.com/language/ref/$Output.html.
Text
Wolfram Research (1988), $Output, Wolfram Language function, https://reference.wolfram.com/language/ref/$Output.html.
CMS
Wolfram Language. 1988. "$Output." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/$Output.html.
APA
Wolfram Language. (1988). $Output. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/$Output.html