docs: def render_file(context, path, absolute=False):
      """
      Like :py:func:`read_file`, except that the file is rendered as a Jinja template 
      using the current context. If `absolute` is True, use absolute path, otherwise 
      path is assumed to be relative to Tarbell template root dir.
          
      For example:
  
      .. code-block:: html+jinja
      
          <div class="chapter">
              {{ render_file('_chapters/one.txt') }}
          </div>
      """
      site = g.current_site
      if not absolute:
          path = os.path.join(site.path, path)
  
      return render_template(path, **context)