<div class="message chat-msg chat-action {{{o.extra_classes}}}" data-isodate="{{{o.time}}}" data-from="{{{o.from}}}">
    <span class="chat-msg-heading">
        <span class="chat-msg-author">**{{{o.username}}}</span>
    </span>
    <p class="chat-msg-text"><!-- message gets added here via renderMessage --></p>
</div>
