<TMPL_LOOP OUTER_LOOP>
      OUTER: <TMPL_VAR OUTER_VAR>
        <TMPL_LOOP INNER_LOOP>
           INNER: <TMPL_VAR INNER_VAR>
           INSIDE OUT: <TMPL_VAR OUTER_VAR>
        </TMPL_LOOP>
   </TMPL_LOOP>