title: Robots.txt Allow sub folder but not the parent
body: <p>Can anybody please explain the correct <code>robots.txt</code> command for the following scenario.</p>
  
  <p>I would like to allow access to:</p>
  
  <p><code>/directory/subdirectory/..</code></p>
  
  <p>But I would also like to restrict access to <code>/directory/</code> not withstanding the above exception.</p>