Quote:
Originally Posted by eschwartz
I suppose my opinion of them has been colored by the only one I've ever seen... I thought it was supposed to be OCR with a text overlay, though? Sounds less than wonderful to me.
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Not really OCR. There's an explanation of it in the Wiki
here. It's used in cases where there is no digital version of the text, or the formatting is so complex that there's no easy way to create one (the books I have are mathematics books, full of equations).