Map Development Area (MDA)
Location:
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markup
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html
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xhtml
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Types:
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Comment:
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XHTML documents must have a DOCTYPE declaration -- html, head and body elements must be present
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motivation
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many pages on the Web contain "bad" HTML -- browsers do their best to compensate in order to diplay content -- XHTML gives the opportunity to write "well-formed" documents -> everything has to be marked up correctly -- stricter and cleaner version of HTML -- convergence towards XML
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Comment:
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combination of HTML and XML -- consists of all the elements in HTML 4.01 combined with the syntax of XML -- allows the use of namespace (to include SVG document, for instance)
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Comment:
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most important differences to HTML: elements must be properly nested -- documents must be well-formed -- tag names must be in lowercase -- all tags must be closed (empty tags as well), special characters (&<> must be encoded), ....
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history
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became an official W3C Recommendation January 2000 -- supposed to be next generation of HTML
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