Chances, are, however, you keep a backup copy of your operating system on an optical disc in the desk drawer, just in case.

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This means that someone bought a physical copy, cut the spine, scanned the pages and used optical character recognition (OCR) to get a first draft.

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These specialists can also prescribe an exciting array of high-tech optical devices such as software and screen-reading programs that enlarge e-mail and Web site copy, as well as handheld devices that enlarge printed material of any size.

FORBES: Tara A. Cortes