dot
What is a .dot file?
text/vnd.graphviz
A DOT file is a Graphviz graph described in the DOT language — nodes, edges, and attributes as plain text — which Graphviz lays out and renders to an image. It is a standard way to define directed and undirected graphs as code.
How to use a .dot file
Use an example DOT file to test Graphviz rendering, DOT parsing, and DOT-to-SVG/PNG conversion.