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Why use data descriptors.
- Content models provide structure we can use to organize our code. (like Yacc/Bison)
- Get data filtering up front - by the parser.
- Restrictive descriptors yield better filters.
- Inappropriate descriptors reject desired input.
What are examples.
- Well formed XML documents.
- What if we get a dom tree but they are not well formed?
1999-08-20