The article for PrintScreen says that the command is functionally useless and that it was a "planned feature" that got dropped. However, I have found that on the TI-82 it is not only valid but it shows up in the PRGM menu. I have not exactly figured out what it does; the only thing I can see is that the run indicator spins for less than a second, it pauses the screen as if the Pause command was run, and it waits for the Enter key to be pressed (or 2nd+[QUIT]).
Now I am curious: what does this command even do? It obviously does *something* but I can't figure out what.
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Screw that :p