You've discovered a legacy button which carried over from the dumb terminal days of mainframe networks. Devoid of any processing capabilities, a dumb terminal is an output device that allowed a user to connect and work off a mainframe computer network. Print Scrn/SysRq, Scroll Lock, and Pause/Break are all buttons that allowed a mainframe user, and DOS users later on, to easily navigate through many lines of text. But, these buttons are of little importance to Windows users today. |
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