| How to detect links |
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| · | Could
have any name and content at all |
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| n | <footnote>,
<criticism>, … |
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| · | xlink:type attribute marks linking elements for |
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| applications
to find: |
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| <!ELEMENT footnote EMPTY> |
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| <!ATTLIST
footnote |
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| xlink:type CDATA #FIXED "simple" |
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| xlink:href CDATA #REQUIRED> |
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| · | For
example: ...has studied the
issue.<footnote |
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| href="http://www.doctools.com"
/> |
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