From The Free On-line Dictionary of Computing (19 January 2023): up <jargon> Working, in order. E.g. "The down escalator is up." Opposite: down. [Jargon File] (1995-03-06)
up
<jargon> Working, in order. E.g. "The down escalator is up."
Opposite: down.
[Jargon File]
(1995-03-06)