What is DTD?

 What is DTD? Document Type Definition SGML XML Documents URI
Document Type Definition

     Schema specification method for SGML and XML documents. DTDs are either contained in the document or belong to its external subset and are then referenced from within the document's document type declaration per URI. Known DTD's are e.g. DocBook, CML, IBTWSH, and HTML. DTD2HTML generates HTML documentation for SGML DTDs. For XML, DTD's will be replaced by the new XML Schema specification method.

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 What is DTD? Document Type Definition SGML XML Documents URI