[orca-list] OT, any command for turning off monitor display?

["Krishnakant Mane" <hackingkk gmail com>]

hello all,
I know this is kind of off topic.
but I was just wondering if there is a command to stop screen display
and keep the laptop working?
since I use orca any ways, I think I can save power with that command
on the terminal.
happy hacking.
Krishnakant.