title: .htaccess redirection to subfolder (masked)
body: <p>I want to redirect "www.adomain.com" to "www.adomain.com/cms". The cms-part should be masked.</p>
  
  <p>I don't get it to work silently. So "cms" is always part of the url.</p>
  
  <p>I tried this solution: <a href="https://stackoverflow.com/a/4475173/1052107">https://stackoverflow.com/a/4475173/1052107</a>, but I always get an Internal Server Error.</p>