网站管理员可籍着为网站定义一个自订标头来为他们的网站预设一个特定的文件兼容性模式。

Site administrators can configure their sites to default to a specific document compatibility mode by defining a custom header for the site.

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举例来说，下列的web . config文件使Microsoft Internet Information Services (IIS)能定义一个自订标头以自动使用IE7 mode来编译所有网页。

For example, the following web.config file enables Microsoft Internet Information Services (IIS) to define a custom header that automatically renders all pages in IE7 mode.

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尝试在文件层级自订中序列化快取资料失败时，所掷回的例外状况。

The exception that is thrown when an attempt to serialize cached data in a document-level customization fails.

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