{% load i18n %}
{% if lines %}
<ol class="file_listing">
  {% for line in lines %}
  <li id="L{{forloop.counter}}">
  <a href="#L{{forloop.counter}}">{{line}}</a>
  </li>
  {% endfor %}
</ol>
{% else %}
<h1>{% trans "Viewer not available" %}</h1>
{% endif %}