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> Since namespaces associate a name with a language dialect, what is a best > practice for "evolving" that namespace when the language evolves? This is of course something of a religious question, and you'll get different answers from different people, but the answer I prefer is that the namespace name is (only) the name of the language dialect. So if your new language is close enough to the old one to be called a new version of the same language, it should be in the same namespace. If it is really a new language with just an historic association with the old language, then it should be in a new namespace. So, MathML 2, being version 2 of MathML, uses the same namespace as MathML 1. If at some point in the future we decided MathML was all wrong and we want to do YetAnotherMarkupLanguageForMath then that would be in a new namespace. If you change the namespace then, to a namespace aware processor, the name of _every_ construct in the language has changed, as the name of each element is the namespace/local-name pair. It's hard to argue that if you have changed the name of every construct in a language that it is just an incremental version change. 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 or alternatively call Star Internet for details on the Virus Scanning Service.
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