Each block below is a ```gitsvg fence; the source is shown alongside the
rendered diagram. The op-stream syntax is gitsvg's — see the
gitsvg project for the full reference.
Linear history
Branch and merge
Multiple diagrams on one page
Each diagram gets its own id namespace, so any number can coexist on a page:
Themed (gui)
A theme op selects one of gitsvg's named themes (here gui):