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Today asynchronous systems dominate using Web technology
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For synchronous delivery, Tango 2 is about as good as you can do with current browsers -- compatible with major asynchronous mode
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When W3C DOM fully supported and XML is well established, we can evolve Tango and Shared Browser to provide richer interactive shared Web Pages
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Universal Access for different devices (Fully capable and impaired users) from PalmTops to PC's
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Greater use of XML Web components for both content and for specification of collaboration policy
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Integration of asynchronous and Synchronous messaging Services (Tango supports Pagers Palmtops etc.)
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Integration of Tango and Database backends to provide "Portals to Education"
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