The folks at adafruit probably do know, but it does make sense if you expand the words: "Control, Alter, and Delete"

I was going to post a similar comment, and then decided against it. I realized I haven't used Windows as a daily driver in decades and thought maybe there was a new use for it that I was not familiar. Glad to see I wasn't the only one confused by it. Closest I could come was they were going to lock out the user, but that was Windows-L or something wasn't it?

Reminds me of people who think penultimate is just super-duper-ultimate.

It has been used as an idiom to mean stopping or restarting something (the former in this case) for decades: https://wordspy.com/words/ctrl-alt-delete/

I think it's because most people associate Ctrl-Alt-Del with the process of terminating a process, so they use the key sequence itself to refer to the act of terminating something.

Open process manager to force an unresponsive program to close. This has been part of popular lexicon for decades. Eg from the song Death to Los Campesinos, "I'll be ctrl-alt-deleting your face with no reservations"

Alter the control, and delete!

In modern Windows, the three-key salute is a way to lock your session securely. Maybe that's what they mean: locking it up?

Maybe we should just install this keypad on our printers and be done with it:

https://www.vectorstock.com/royalty-free-vector/ctrl-alt-del...

Hey, it's similar to Weird Al's song:

Play me online? Well, you know that I'll beat you

If I ever meet you I'll control-alt-delete you

Perhaps they were using Ctrl-Alt-Del to get to the Task Manager so that they can kill an unruly process?

Does it really matter what "they know"? It seems like the entire post is written by an LLM.

This is more like installing anti-virus on your 3d printer.

It's the same as control open-apple reset.

I don't think there's a reading that suggests it's a good thing for 3D printers. The rest of the page confirms that.