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XML documents are
used to transfer data from one
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place to another
often over the Internet.
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XML subsets are
designed for particular applications.
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One is RSS (Rich
Site Summary or Really Simple
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Syndication
). It is used to send breaking news
bulletins
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from one web site
to another.
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A number of
fields have their own subsets. These
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include
chemistry, mathematics, and books
publishing.
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Most of these
subsets are registered with the
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W3Consortium and
are available for anyone’s use.
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