Some images (kind of graph+mindmap) for actions (function-type) and transitions.

[Mr-Ruben]

I created these for my own learning, and before I forget, I'd like to share.
(c)Copyleft

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Made in draw.io with a bit of mermaid code and images from Burr's documentation

[skrawcz]

thanks! Feel free to create a PR for the docs.