You use them to define the properties of the pages of the generated document and also define the content of the header and footer area.

您使用它们来定义生成文件的页面的属性，同时定义头区域与注脚区域的内容。

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You use them to define the properties of the pages of the generated document and also define the content of the header and footer area.

您使用它们来定义生成文件的页面的属性，同时定义头区域与注脚区域的内容。

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