3. Third Numbered Chapter
Reached from the same :numbered: toctree as "First Numbered Chapter" and
"Second Numbered Chapter", and also writing its own .. sectnum:: below —
which is entirely ignored, because the toctree's numbering already covers
this document. Compare with //examples/sectnum, where the very same
directive, on a document no numbered toctree reaches, numbers its sections
instead.
3.1. Configuring
Still numbered by the toctree, continuing from "Second Numbered Chapter" —
not reset to "Ignored100." by the .. sectnum:: above.