Anatomy of a DTD
Now that you have seen a DTD, let's look at each of the DTD declarations in more detail. Generally, DTDs consist of three basic parts:
□ Element declarations
□ Attribute declarations
□ Entity declarations
The current name example needs to be expanded to explore the more complex aspects of DTDs. In this section, you will create an XML vocabulary for listing contacts — all of your friends and family. Note, however, that there are many existing vocabularies for contacts on the Internet. Using a simplified format will enable you to quickly create your own vocabulary.
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