Two instance document XML data are also defined.

另外还定义了两个实例文档XML数据。

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The instance document contains only one Region element.

该实例文档仅仅包含一个Region元素。

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When you update the data in a form element, the instance document is updated.

当更新表单元素中的数据时，会更新实例文档。

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In one noteworthy instance, one document requires a 500-foot distance between spectators and the race course, while another requires 1, 000 feet.

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For instance, they've spied on cheating husbands and wives in order to document extramarital affairs.

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For instance, before the bank issues a certificate, the bank snail-mails a document containing unique information the customer must use to activate the digital certificate.

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