PlantUML in a nutshell

PlantUML is a component that allows to quickly write :
The following non-UML diagrams are also supported:

Diagrams are defined using a simple and intuitive language. ( see PlantUML Language Reference Guide).

New users can read the quick start page. PlantUML can be used within many other tools.

Images can be generated in PNG, in SVG or LaTeX format. It is also possible to generate ASCII art diagrams (only for sequence diagrams).

# online generations:Since everLast 24 hoursLast hourLast minute

(You can edit the text if you want,
the diagram will be dynamically updated!)
describes the following diagram :

This example is working thanks to the online demo server.