The document uses .rst format which stands for reStructuredText
(reST)](https://docutils.sourceforge.io/docs/user/rst/quickstart.html).
Cheat sheet for reST.
# Install python libraries
pip install --upgrade -r docs/requirements.txt
# Install pandoc, see also https://pandoc.org/installing.html
sudo apt install pandoccd docs
make clean
PYTHONPATH=$PYTHONPATH:.. make html