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>Adding the robots info to every DTD in the world requires >unanimous agreement. Adding a PI requires non-interference >with other PIs, a vastly simpler task. Waiting for XML >to support mixin vocabularies and for those to be widely >used, could take a few years. So the element-based approach >just doesn't fit my definition of "ideal". That was the >approach I originally thought about, but there were just >too many obstacles for it to succeed. It is the 'interference' notion that I am against because it causes loss of extensibility. This notion creates an imbalance between document creator and subsequent document processors because any change to the document would have to use arcane XML features like PI to avoid 'interfering' with the original document. Perhaps a more general placeholder standard for tags such as your indexing tag/PI is what we need. For example: <meta:info xmlns:meta="http://www.xml.org/metainfo"> </meta:info> In the DTD, meta:header content is declared to be ANY so that any meta-info tags such as your index tag can be dropped in. Such a general proposal would have far better chance of being adopted than a more specific proposal. Once it is adopted, everyone can use it to drop in tags for their own purpose. Best, Don Park - mailto:donpark@d... Docuverse - http://www.docuverse.com xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i... Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ and on CD-ROM/ISBN 981-02-3594-1 To unsubscribe, mailto:majordomo@i... the following message; unsubscribe xml-dev To subscribe to the digests, mailto:majordomo@i... the following message; subscribe xml-dev-digest List coordinator, Henry Rzepa (mailto:rzepa@i...)
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