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    Why put books online?

    Online books have several advantages. First, we anticipate that online books will be cheaper to produce, to purchase, to acquire, and to maintain. We also expect that online books will provide increased functionality such as searching and linking. They offer obvious potential for enriched content through the addition of links to multimedia, computer simulations, and other features. There is also potential for developing expanded products, rather like a collection of books linked through a web site. Not least in importance, online books can provide availability around the clock and calendar.