Thx, got it :D

I have no idea what any of this means. Plz hlp

And in regards of text and graphs: everything is mirrored from behind. I am not sure what transparent screens may be used for.

Doesn’t this already exist since half a century? https://en.m.wikipedia.org/wiki/Head-up_display No need for a transparent display at all.

It is used in ksh korn shell to see what executable responds to a command:

https://superuser.com/a/351995

Edit: Oh, what a rabbit hole: Why not use “which”? What to use then?

The image didnt load for me properly, so here it is:

It is also widely used to express something like “I told you so” or “I already warned you that this will happen. You did this to yourself.” in a single word.

E.g. “Did you hear about my anti-vaxx aunt Hildegard? She died of Covid last month.”

“Tja.”