{% comment %}
Check for preamble_toc first so empty
s aren't drawn when it loops back through.
{% endcomment %}
{% with toc_depth=toc_depth|default:1 %}
{% if preamble_toc %}
{% for item in preamble_toc %}
{{item.title.full}}
{% with preamble_toc=item.children toc_depth=toc_depth|add:1 %}
{% include "regulations/toc-preamble.html" %}
{% endwith %}