title: How does webopt:bundlereference work in ASP.Net?
body: <p>In the default template of the ASP.Net web forms for Visual Studio 13, there is a tag webopt:</p>
  
  <pre><code>&lt;webopt:bundlereference runat="server" path="~/Content/css" /&gt;
  </code></pre>
  
  <p>After searching, it seems it is for bundling and minification. Is there any official documentation for the tag? I am unable to find one. Specifically I wanted to know, how does it work? If there is already a  minified file in the Content folder, it is taking that file. How can i change that behaviour? How does the path value translate, since there is no folder css inside Content folder?</p>