15.4. Element Types

Elements are the primary components of XML documents. Each element has a type name, a set of attributes, and content. The type name serves to identify its element type: a class, of which the element claims to be an instance.

The structure of elements and their types is more complicated than the structure of attributes and their types. Instead of just a value model, an element type has both an attribute set model and a content model and substitution information. Like an attribute type, an element type has a name, a scope, and possibly an annotation. Most of the attribute set and content models—the structure type—is separated out into a separate component because it has a complicated structure of its own and is potentially ...

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