moodle/message/templates/message_area_message.mustache

{{#displayblocktime}}
    <div class="blocktime" data-region="blocktime" data-blocktime="{{blocktime}}" data-id="{{id}}{{isread}}">
        {{blocktime}}
    </div>
{{/displayblocktime}}
<div class="message row-fluid" data-region="message" data-blocktime="{{blocktime}}" data-id="{{id}}{{isread}}" tabindex="0">
    <div class="span1 deletemessagecheckbox" data-region="delete-message-checkbox">
        <input type="checkbox" data-messageid="{{id}}" data-messageread="{{isread}}"/>
    </div>
    <div class="span11 content {{position}}">
        <span data-region="message-text">
            {{{text}}}
        </span>
        <span class="timesent">
            {{timesent}}
        </span>
    </div>
</div>