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I find it wonderfully appropriate that the letter "Q," particularly as portrayed in the illustration accompanying your article, gives the appearance of looking along the hollow barrel of a paper key. The barrel is of course a sheet rolled up into a paper tube and the extension at the bottom that forms the "unlocking code" bar of a key swashes to the side, being paper after all, with no force of position available to its construction, rendering it useless in function. How apt. - Stanley Anderson