# PlantUML Diagrams

If you have PlantUML installed and available on your path, mkbook will try to render any code blocks with a language tag of `plantuml` as inline SVG images.

For example:

    ```plantuml
    @startuml
    Alice -> Bob: Authentication Request
    Bob --> Alice: Authentication Response

    Alice -> Bob: Another authentication Request
    Alice <-- Bob: Another authentication Response
    @enduml
    ```

is rendered as:

This feature is still experimental, but I find it handy for my books.

Next chapter: “KaTeX (Math) Formulas”