web config clear

What is the use of the <clear/> in the web.config file?

I h开发者_开发百科ave it under connectionStrings:

<connectionStrings>
        <clear />
  </connectionStrings>

It clears all inherited keys, that's it.

Here is the MSDN Article: http://msdn.microsoft.com/en-us/library/aa903345(v=vs.71).aspx