{%- if prev %}
<li>
  <h2>{{ _('Previous topic') }}</h2>
  <p class="topless"><a href="{{ prev.link|e }}"
                        title="{{ _('previous chapter') }}">{{ prev.title }}</a></p>
</li>
{%- endif %}
{%- if next %}
<li>
  <h2>{{ _('Next topic') }}</h2>
  <p class="topless"><a href="{{ next.link|e }}"
                        title="{{ _('next chapter') }}">{{ next.title }}</a></p>
</li>
{%- endif %}
