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What XML is not

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  • XML provides "syntax, not semantics"
    • Tags have no predefined meaning
    • Unlike HTML, XML by itself conveys only content and structure, not presentation, behavior, or meaning
  • Associating presentation or behavior with XML requires additional mechanisms
    • Industry agreements on the processing of particular XML languages (example: HTML)
    • Downloadable programs, applets, or scripts designed for a particular XML language
    • Stylesheets
  • Associating meaning with XML requires additional mechanisms
    • Namespaces (identity hooks for meaning)
    • Prose (natural language definitions)
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