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It is essential that collaborative technologies support all users independent of their hardware and physical capabilities
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Hardware issues are essentially illustrated by palmtop to CAVE example on previous foil
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Suppose we wish to teach a class where some students and/or teachers have impaired sight and hearing.
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Then we need to share same object content but render it differently on each client.
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Possibly want to render a given object in multiple ways on a given machine
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Essential to share content (as in XML JSSB) and this enables you to choose right presentation for given client
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Typical HTML layout aimed at fully capable users and needs to be redone for physically impaired users
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Concepts of XML JSSB for universal access developed with Al Gilman from Trace Center
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