You normally want to run this from the command line and you can convert to various formats:
sudo apt install -y graphviz
dot testme.txt -Tpdf > testme.pdf
dot testme.txt -Tpng > testme.png
Refer: testme.txt

Technical notes, and other ideas.
You normally want to run this from the command line and you can convert to various formats:
sudo apt install -y graphviz
dot testme.txt -Tpdf > testme.pdf
dot testme.txt -Tpng > testme.png
Refer: testme.txt