This Polaris proposal tool documentation uses the mkdocs material theme which in turn requires python to be installed.
You can find detailed theme instructions in the mkdodcs material site. However, all of the necessary packages can be installed with
pip install -r requirements.txt
Various diagrams are created using plantuml. The way that this is integrated with markdown is like
```plantuml id="myDiag" format="png" classes="uml myDiagram" alt="My super diagram placeholder" title="My super diagram" width="300px" height="300px"
Goofy -> MickeyMouse: calls
Goofy <-- MickeyMouse: responds
```
Once you've made your working copy of the site repo, from the repo root folder, run:
mkdocs serve
and navigate to http://127.0.0.1:8000/