In de: we have a lot of articles on graph theory missing example images. Graphs
are also useful in other articles to visualize information. Editing images of
graphs with your favorite program and format is a consumption of time and nobody
can easily alter my images. We do have <math> and <hiero>-section. I'd
editable graphs with <graph>...</graph>.
We could easily use the DOT-syntax and
to create PNG-images or SVG. It's damn powerful and not that complicated!