puml
What is a .puml file?
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A PUML file contains a PlantUML diagram written as text — sequence, class, use-case, activity, and other UML diagrams described in a compact syntax that PlantUML renders to an image. It is a popular diagrams-as-code format.
How to use a .puml file
Use an example PlantUML file to test diagram rendering and parsing, and PlantUML-to-image conversion in documentation pipelines.