title: In Google Analytics, what does the locale "c" stands for?
body: <p>Google Analytics displays statistics depending on user's language.</p>
  
  <p>I have visitors whose locale is <code>en-us</code> (english), <code>fr</code> (french), but also <code>c</code>.
  What does this <code>c</code> language code stands for ?</p>
  
  <p>I took a look at reference tables <a href="http://en.wikipedia.org/wiki/ISO_639">here</a> and <a href="http://en.wikipedia.org/wiki/ISO_3166-1">here</a> but could not find <code>c</code>.</p>
  
  <p>Thanks in advance !</p>