A user can then dynamically define sets of documents having these overlapping attributes.

用户可以动态定义具有重叠属性的文档集。

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Well-formed means there can be no overlapping elements, all elements must contain a closing tag, attributes must be quoted and given a value, and the case of the characters is important.

“形式完好”意味着不可以重叠(overlapping)元素，所有元素都必须包含关闭标签，而属性必须包含双引号和一个值，字母大小写也同样重要。

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Well-formed means there can be no overlapping elements, all elements must contain a closing tag, attributes must be quoted and given a value, and the case of the characters is important.

“形式完好”意味着不可以重叠(overlapping)元素，所有元素都必须包含关闭标签，而属性必须包含双引号和一个值，字母大小写也同样重要。

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