>>>Now I have a laptop with a remote which never worked (not that I'd ever want it to work, but just to show how things don't change).
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>>When I was a kid, my grandmother had a floor model radio/turntable (78rpm) with button presets (inside was string). It was a beautiful piece of furniture (I wish I had it now). Anyway, all the preset buttons were brown except for the one on the extreme right end which was red. It was labelled 'TV'.
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>But what did it do? Nobody dared to press the red button, so we'll never know?

You know, I don't recall if anybody ever pressed it. I imagine somebody must have, but I didn't. I did love to lay on the floor in front of that radio and listen to the shows - "X minus 1", "Inner Sanctum", "Yours Truly, Johnny Dollar", etc, etc.