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VRML plays same role to 3D worlds that HTML does to documents
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VRML 1.0 has been widely available and specifies static 3D scenes through which you can navigate. Already provides universal visualization environment and we have examples of use In Geographical Information Systems
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Note can embed clickable URL's as with ImageMaps which can be used to annotate images to provide interactive educational resources
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Unfortunately about a factor of 10 slower than it could be as this is serious as 3D graphics is compute intensive!
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VRML 2.0 is now the standard with critical enhancements so that individual elements of 3D world are dynamic and can be programmed
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It is designed to support full interactivity (televirtuality) with texture mapped video, avatars etc.
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VRML 2.0 could require huge computing resources whether used as the virtual car-dealership / interactivity gaming or more academic uses such as collaboration between teachers and students in 3D virtual classroom
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Bandwidth and computing needs of VRML are handicapping acceptance
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