Figures and diagrams
You can upload images in any folder below Documentation and use it like that:
Documentation/MyDocs.rst
.. figure:: /_Images/a4.jpg
:alt: A spiral staircase seen from above, with people walking up and
down the steps
This is the image caption
For details see Using images in reST documentation.
You can also use Embedded PlantUML diagrams.
Attention
For official and Core manuals please follow the Guidelines for creating images.