Even though Shift and Space are both pretty much essential, my vote goes to Control because it can substitute for so many of the other ones: Enter, Backspace, Tab, and Esc are, of course, ^M, ^H, ^I, and ^[, respectively. This way I get to vote for 5 of the options for the price of one!

In reply to Re: The most useful key on my keyboard is: by Celada
in thread The most useful key on my keyboard is: by cog

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