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>This is information for a specific kind of XML processor >(an indexing robot), but it is not specific to the document >type. So we need a mechanism that applies to any XML document >and can be automatically ignored by non-robot processors. >A PI is an exact fit. Even the name is right -- it is an >instruction to the robot about how to process it. > >The alternative, adding an element to every DTD in the >universe, with the corresponding breakage to every processor >that reads those DTDs, is just too awful to contemplate. If you intend the indexing PI to be used by document creators, it is not unreasonable to expect them to include it in their DTD. Frankly, this is one of the reasons I do not like to use DTD. I am in favor of adopting the policy of ignoring foreign elements and attributes for extensibility. Absolute ordering of elements also detracts from extensibility. Relative ordering of elements is fine though. My ideal solution for this problem is a small set of elements that can be embedded into documents. 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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