una/modules/base/text/template/unit_full_private.html

<div class="bx-base-text-unit bx-base-text-unit-ext bx-def-margin-bottom">
    <h1 class="bx-def-padding-sec-top"><a href="__content_url__"><bx_text:_sys_private /></a></h1>
    <div class="bx-base-text-unit-info bx-def-margin-sec-top">
        <span class="bx-def-font-grayed">__summary__</span>
    </div>
</div>