{% load markdown_extras %}
{% for section in sections %}
  <li>
    <a href="#section-{{ section.id }}">{% if section.item %}{{ section.title|default:section.item.content|markdown_title|truncatechars:90 }}{% else %}{{ section.title|default:section.sub_collection.title|truncatechars:90 }}{% endif %}</a>
    {% if section.sub_collection and section.sub_collection.sections.all %}
      <ol>
        {% include 'core/_collection_toc_items.html' with sections=section.sub_collection.sections.all %}
      </ol>
    {% endif %}
  </li>
{% endfor %}