Use PlantUML syntax in shortcodes to have diagrams rendered automatically.
Wrap your PlantUML syntax in our shortcode tags like this, and the PlantUML SaaS will be used to render a lovely diagram.
[plantuml]
Alice -> Bob: Authentication Request
Bob --> Alice: Authentication Response
Alice -> Bob: Another authentication Request
Alice <-- Bob: another authentication Response
[/plantuml]
Easily add all sorts of UML diagrams (Sequence, State, Activity, etc) to your site using the powerful PlantUML syntax.