http://eweiibe6tdjsdprb4px6rqrzzcsi22m4koia44kc5pcjr7nec2rlxyad.onion/help/administration/integration/plantuml.md
If the PlantUML server is correctly configured, these examples should render a
diagram instead of the code block:
Bob -> Alice : hello
Alice -> Bob : hi
Inside the block you can add any of the diagrams PlantUML supports, such as:
Activity
Class
Component
Object
Sequence
State
Use Case
You can add parameters to block definitions:
id : A CSS ID added to the diagram HTML tag.