title: Difference between xs and xcs in XML schema file?
body: <p>For some reason Visual Studio wants me to do</p>
  
  <pre><code>&lt;xcs:element ...&gt;
  &lt;/xcs:element&gt;
  </code></pre>
  
  <p>rather than</p>
  
  <pre><code>&lt;xs:element ...?
  &lt;/xs:element&gt;
  </code></pre>
  
  <p>What's the difference?</p>