In a <tpl:Pings> loop, the tpl:PingIfFirst tag return a value is the trackback is the first of the list.

Defines what value will be returned in case of success.

• return="prems" will display prems if the trackback is the first of the list. By default, first is displayed.

<p{{tpl:PingIfFirst return=" class=\"prems\""}}> ... </p>