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“>Briefly stated, the primary purpose of XML namespaces is to define amechanism for uniquely naming elements and attributes so that differentvocabularies can be mixed in an XML document without name conflicts. Forexample, if you want to refer to both the price element defined in theSuperDuperCatalog.dtd and also the price element from theDiscountHouseCatalog.dtd, you need a way to unambiguously identify which type ofprice you are referring to at any point in an XML instance that refer 
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