W3C DOM (http://www.w3.org/DOM/ ) defines a platform-independent programmatic interface to web documents:
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provides access to structured data
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adds object orientation to page layout and design (XML and HTML elements are objects with properties and methods)
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is implemented with a scripting language
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defines event model (in level 2 DOM)
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defines a way of navigating through component objects in a web page
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Initially, DOM is bound to ECMAScript but is language neutral in design
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Current Browsers implicitly define a DOM which is somewhat different between Microsoft and Netscape and very different between versions 4 and 5
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