The “build configuration file” contains (almost) all configuration needed to customize Sphinx input and output behavior.
{project}/docs/conf.py
https://docs.releng.linuxfoundation.org/projects/lfdocs-conf/en/latest/config.html
https://www.sphinx-doc.org/en/master/usage/configuration.html
Contains the required libraries to be used by Sphinx.
Required to customize the ReadTheDocs input and output behavior. Important: This file is located in your {project} root directory (e.g. doc/.readthedocs.yaml).
{project}/.readthedocs.yaml
Required to customize different tox environments.
{project}/tox.ini
https://tox.wiki/en/latest/config.html
The reStructuredText Cheat Sheet as an example .rst file