{% for toc_item in toc %}
  • {{ toc_item.title }} {% if toc_item.children %}
      {% for toc_item1 in toc_item.children %}
    • {{ toc_item1.title }}
    • {% if toc_item1.children %}
        {% for toc_item_2 in toc_item1.children %}
      • {{ toc_item_2.title }}
      • {% endfor %}
      {% endif %} {% endfor %}
    {% endif %}
  • {% endfor %}
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