Probably the only VCS-friendly format for graphs. If you want to write technical design documentation, you have to put it along with sources (because this is th

Probably the only VCS-friendly format for graphs. If you want to write technical design documentation, you have to put it along with sources (because this is the natural lifecycle environment of sources - fixed word-processing-like documents or confluence will never be able to handle well versions, branches, backports), and for this reason, a diff-friendly text format is mandatory. Using Graphviz is the only way I know to build such specs. Bonus point: many online VCS renderer are able to display .md format, with embedded .svg images (directly produced from Graphviz).