谁能告诉我下面代码代表的意思

<DIV class=ttMenudiv><SPAN style="COLOR: #ffc468">&gt; 所有版块</SPAN> </DIV>
<!--{eval $comiis_nn=0;}-->
<!--{loop $leftside['forums'] $upfid $gdata}-->
<!--{eval $comiis_nn++;}-->
<div class="ttMenudiv">
<a href="javascript:;" style="CURSOR: pointer" title="$gdata['name']"><img align="absMiddle" {if $fgroupid == $upfid} src="$_G['style']['styleimgdir']/mop_tt/ico_ttmn_2.gif" {else} src="$_G['style']['styleimgdir']/mop_tt/ico_ttmn_1.gif" {/if} id="imgitem{$comiis_nn}"> $gdata['name']</a> </div>
<UL id="item{$comiis_nn}" style="{if $fgroupid == $upfid} DISPLAY:block {else} DISPLAY:none {/if}">
<!--{loop $gdata['sub'] $subfid $name}-->
<li {if $_G['fid'] == $subfid} class="fgl_a"{/if}>
<a href="forum.php?mod=forumdisplay&fid=$subfid" title="$name">$name</a></li>
<!--{/loop}-->
</ul>
<!--{/loop}-->
</div></div>
<!--{/if}-->
<!-- 左侧固定块 结束 -->