解释如何在运行时为组件指定和显示帮助文件。
Explains how to specify and display a Help file for your component at run time.
帮助文件依旧安装在本地，不过不会显示在默认浏览器中，取而代之的是一个特制的客户端程序。
Help files are still installed locally, but instead of showing them in the default browser you get a specialized client.
最值得注意到莫过于脱机帮助文件的显示方式。
The most notable is probably the way help files are displayed when running in off-line mode.
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