换句话说，对应xml语法中的每个概念定义相应的类：元素、属性、实体、文档。

In other words, classes are defined for every concept in the XML syntax: element, attribute, entity, documents.

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请注意，事件处理器接收元素名称、名称空间和属性列表作为来自语法分析器的参数。

Notice that the event handler receives the element name, namespace and attribute lists as parameters from the parser.

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这种类 SQL 语法能够遍历 XML 文档来访问元素和属性。

This is SQL-like syntax that can traverse through an XML document to reach elements and attributes.

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