I've just published a blog post about how I use Graphviz while writing using Org-mode.
I love using Org-mode when I'm writing because it makes it easy to bring programming into your writing. Graphviz is a good example of a program that fits into this ecosystem well.
(Also, first Mastodon post!)
Fosstodon is an English speaking Mastodon instance that is open to anyone who is interested in technology; particularly free & open source software.