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Arjun Ray wrote: > Basically, when multiple vocabularies are in play, you can't automatically > assume - i.e. as a default - the vocabulary to which a generic identifier > (or attribute name) should be imputed; or for that matter, that there is > only one relevant generic identifier for the particular element. You need > control information associated with the use of each vocabulary at every > start tag (i.e. for each element structure) Brilliant. I suggest that an understanding of Arjun's example is prerequisite for any helpful discussion of 'namespaces' in markup. As a poetics of vocabulary application and control it is comprehensive, elegant and efficient--though it is not immediately concerned with ease of programmer's access to the manipulation of XML, which over four years of discussion on xml-dev has apparently become the chief criterion for preferring any particular vocabulary control mechanism.
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