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== Alternative text-entering methods ==
[[File:OnBoardKeyboard.png|thumb|On-screen keyboard controlled with the mouse can be used by users with limited mobility.]]
[[Optical character recognition]] (OCR) is preferable to rekeying for converting existing text that is already written down but not in machine-readable format (for example, a [[Linotype machine|Linotype]]-composed book from the 1940s). In other words, to convert the text from an image to editable text (that is, a string of character codes), a person could re-type it, or a computer could look at the image and deduce what each character is. OCR technology has already reached an impressive state (for example, [[Google Book Search]]) and promises more for the future.
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