[pkg] Tidy substvars usage in control file The documentation package was missing a Built-Using field to record the provenance of the templates. Empty packages or meta packages do not require Depends on a specific Python version, so we can remove the relevant substvars.

.. -*- coding: utf-8 -*-

.. _Part4:

----------
Appendixes
----------

The following chapters are reference material.

.. toctree::
   :maxdepth: 1
   :numbered:

   faq
   rql/index
   mercurial
   depends
   docstrings-conventions