OurBigBook DocsLists sections that are secondary children of the current section, i.e. tagged under the current section.
The main header tree hierarchy descendants already show under the table of contents instead.
E.g. in:
the tagged sections for:
= tmp
== Mammal
== Flying
== Animal
=== Bat
{tag=mammal}
{tag=flying}
=== Bee
{tag=flying}
=== Dog
{tag=mammal}- Mammal will contain Bat and Dog
- Flying will contain Bat and Bee