<div class="$css_class"
     xmlns:py="http://genshi.edgewall.org/"
     xmlns:xi="http://www.w3.org/2001/XInclude">
    <div class="error-container">
        <div class="macro-error">KanbanBoard macro error: $error</div>
        <div class="macro-usage">$usage</div>
    </div>
</div>
