Diagrams are output as Dot and PlantUML.
When --dfd argument is passed to the above tm.py file it generates output to stdout, which is fed to Graphviz’s dot to generate the Data Flow Diagram:
tm.py --dfd | dot -Tpng -o sample.png
Generates this diagram:
The following command generates a Sequence diagram.
tm.py --seq | java -Djava.awt.headless=true -jar plantuml.jar -tpng -pipe > seq.png
Generates this diagram: