I always put two. I learned it that way in typing class some years ago. I like it that way.
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Mister MicawberJust be sure you do not put a space before the period.I have it on the best of authority that a tsunami is the result of such an error.
PhilipI have it on the best of authority that a tsunami is the result of such an error.tsunamiis a word meaning "the wrath of the teacher", is it not?