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> It is (needlessly) harder to get > this to work properly if the one namespace URI applies to all versions of a > schema. But I think the mistake there is to tie the schema to the namespace. It is helpful that in all versions of HTML the paragraph element is called p. It gives a level of compatibility between versions. If HTML2's paragraph had been <p-v2> and HTML3.2's was <p-v32> then life would be more complicated, but you would still be able to get by by stripping off the pars of names after the -. Changing a namespace _only_ changes the names of the elements: it doesn't do anything else, and in particular it doesn't do anything about schema. You can get by by breaking apart the name into its local name but that is more or less identical to splitting on "-" as above, and not much more convenient in Xpath (for example). DTD's can be specified by DOCTYPE and Schema can be specified by schemaLocation or other means. If you want to specify a different schema it is perfectly possible to do so without changing all your element names by changing the DTD. David _____________________________________________________________________ This message has been checked for all known viruses by Star Internet delivered through the MessageLabs Virus Scanning Service. For further information visit http://www.star.net.uk/stats.asp
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