/**
  * Experimental: Write After Plugin Main Function
  *
  * @param string &$page
  * @param string &$postdata
  * @param boolean &$notimestamp
  * @return void or exit
  */
 function write_after()
 {
     $args = func_get_args();
     $page = $args[0];
     $postdata = $args[1];
     if ($postdata == "") {
         // if page is deleted
         $pkwk_tag = new PluginSonotsTag();
         $pkwk_tag->save_tags($page, array());
         // remove tags
     }
     // ToDo: renew tag cache on write_after, not on read
     // Since the whole text must be parsed to find '&tag();',
     // it is not realistic.
     // Must create a separated form for Tags to avoid this load.
 }