{%- if hasdoc('about') %}
  <link rel="author" title="{{ _('About these documents') }}" href="{{ pathto('about') }}" />
{%- endif %}
{%- if hasdoc('genindex') %}
  <link rel="index" title="{{ _('Index') }}" href="{{ pathto('genindex') }}" />
{%- endif %}
{%- if hasdoc('search') %}
  <link rel="search" title="{{ _('Search') }}" href="{{ pathto('search') }}" />
{%- endif %}
{%- if hasdoc('copyright') %}
  <link rel="copyright" title="{{ _('Copyright') }}" href="{{ pathto('copyright') }}" />
{%- endif %}
{%- if next and theme_prevnext %}
  <link rel="next" title="{{ next.title|striptags|e }}" href="{{ next.link|e }}" />
{%- endif %}
{%- if prev and theme_prevnext %}
  <link rel="prev" title="{{ prev.title|striptags|e }}" href="{{ prev.link|e }}" />
{%- endif %}