使用文档元素（例如 html）的 manifest 属性为应用程序建立缓存。

Use the manifest attribute on the document element (for example, html) to establish a cache for your application.

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在那些情况下，一种替代方法可能是使用利用特定证书建立好的已高速缓存的连接，它可以对相同类型的证书重复使用。

In those situations, one alternative might be to use a cached connection that has been established using a specific credential, which can be reused for the same type of credentials.

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如果标识符中使用的PAC版本早已在采用PLAM的服务器上进行缓存了，那么就会直接建立这个会话，而不需要从发起主机上检索PAC。

If the version of PAC mentioned by the identifier has already been cached by the PLAM-ed server, the session is set up and no PACs are required to be pulled in from the initiating host.

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