All pages display messages using a standard feedback component.
div id = "centerContent" class = "content center">
<div id = "module wrap">
<h1 class = "[type]">
<wicket:message key = "[ breadcrumbtextkey ]" />
</h1>
<h3 class = "help">
<wicket:message key = "[helptextkey]" />
</h3>
<div wicket:id = "errorMessages"> </div>
[ rest of page content here ]
</div>
</div>