title: Understanding relative paths
body: <p>I'm having some trouble with understanding the meaning of this snippet. I know that __ DIR __ refers to my absolute path, in my case /Applications/MAMP/htdocs</p>
  
  <pre><code>__ DIR __.'/../app'
  </code></pre>
  
  <p>Where is this path looking for the folder /app?</p>
  
  <p>thx,</p>