请问PbootCMS循环调用多个栏目内容

{pboot:nav parent=7 num=3} <div class="news-item">     <div class="item-list news-list">         {pboot:list scode=[nav:scode] num=3 order=sorting}             <div class="pic pic-scale oh">                 <a href="[list:link]">                     <img src="[list:ico]" alt="[list:title]">                 </a>             </div>         {/pboot:list}     </div> </div> {/pboot:nav}

标签：promise循环调用-pb循环语句-openmp for循环-pb中for循环-pb for循环语句-