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in reply to Re^2: The most useless key on my keyboard is:
in thread The most useless key on my keyboard is:

ScrollLock, though... what a pointless key.

If I have just text terminal (e.g. when admining some server) and (forgot|didn't mean) to pipe command to 'less' and the output took more than one screen it's the only way I know to scroll the screen up.