The Application Supportdirectory is where your app stores any type of file that supports the app but is not required for the app to run, such as document templates or configuration files.
应用程序支持文件夹用于存放支持应用、但非应用运行必须的任何文件，比如文档模板、配置文件等。
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Or, for example, if you needed Active Directorysupport.