Which one?

Asciidoc is implemented in wiki events, like https://wikistr.com. We are using the https://asciidoctor.org/ parser in Alexandria.

Gherkin scenarios are coming from me, running them with https://behave.readthedocs.io/en/latest/. Might make an event kind, for that, so that I can link them with the issue events and repo events.

https://plantuml.com/ will be implemented in Alexandria, using the https://docs.asciidoctor.org/diagram-extension/latest/diagram_types/plantuml/ They have a whole bunch of extensions, tho, like LaTeX and ePUB and etc. https://asciidoctor.org/docs/extensions/