tapestry/tapestry-examples/Vlib/src/context/WEB-INF/ShowMessage.html

<span jwcid="$content$">

<span jwcid="@If" condition="ognl:page.message" volatile="true">

<span jwcid="@Information">
    <span class="message" jwcid="@Insert" value="ognl:page.message">Info Message</span>
</span>

</span>
</span>