{volist name="adminNav" id="vo" key="k"}

{if !empty($vo.children)} {volist name="vo.children" id="vo2" key="k2"}
• {$vo2.title}

  {if !empty($vo2.children)} {volist name="vo2.children" id="vo3"}

  {$vo3.title}

  {/volist} {/if}

{/volist} {/if}

{/volist}