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.