title: Standard for specifying Locale in the URL
body: <p>Is there a standard for specifying the Locale (Country+Language) in the URL. I have seen:</p>
  
  <ol>
  <li>example.com/fr-fr/page </li>
  <li>example.com/page?locale=fr-fr</li>
  <li>fr.example.com/page </li>
  <li>example.com/page^fr_fr</li>
  </ol>