title: Web.config appSettings: complex values
body: <p>Is Web.config's appSettings section only capable of storing simple strings like this?</p>
  
  <pre><code>   &lt;appSettings&gt;
       &lt;add key="OKPage" value="http://mysite.com/okpage.html" /&gt;
     &lt;/appSettings&gt;
  </code></pre>
  
  <p>or I can have more complex values like CDATA or nested values? If not, is this the only place in Web.config where to store custom settings? Thanks</p>