why is a pointing hand used to indicate "Reply"?

Posted by Cup Of Christ from spider-wj063.proxy.aol.com on May 14, 2000 at 14:03:46:

I can understand the arrow pointing up to indicate top. And the question mark for FAQ, but the hand pointing to indicate reply? shouldn't it mean go back?

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Because... graml 15:26:35 5/14/2000 (0)

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