我读过：

The web.config files specify configuration settings for a particular
web application,and are located in the application’s root directory;
the machine.config file specifies configuration settings for all of
the websites on the web server,and is located in
$WINDOWSDIR$\Microsoft.Net\Framework\Version\Config.

有没有什么我失踪或任何其他技术方面？我想更多地了解这两个文件.