The task of keeping any form of consistency in websites is difficult. Websites exist for long periods. Over this period of time, many people author webpages for a given website. People are not good at consistently following sets of rules. XML can assist webpage authors by ensuring that webpages of the same type have the same kinds of semantic content.
No system exists to help maintain complex relationships (crossreferences) between webpages. This paper presents an XML extension that describes relationships between XML documents and shows how this extension can be used to capture business rules.
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