Turning mirroring on and off from the keyboard can be useful if your built-in laptop screen has failed, and you want to have the main screen sent to an attached, external screen, to login, etc.
Press and hold the command key, and press the brightness-down key.
Note, if you have set the top row of keys to default to F1 to F12 instead, also hold down the fn key (this is not the default).
I usually write a blog post about once a week. The latest post can be viewed here: Learning from Failure: I think there is a place for parties with views I find insane. (posted 2024-11-28 at 12:41:49). I do podcasts too!. You can listen to my latest podcast, here: OJB's Podcast 2024-08-22 Stirring Up Trouble: Let's just get every view out there and fairly debate them..
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