[remram]

From my top-level comment: "Writing graphviz code by hand, or using google draw/draw.io/... gets painful very quickly."

I am fine with a tool using graphviz under the hood for rendering or layout, but I'm not writing my statecharts in graphviz syntax.

I borrowed the term "parallel state" from https://statecharts.github.io/glossary/parallel-state.html. Both XState and MermaidUML support them.

Again, I am concerned with plotting. I am not trying to use the language/library to implement any keyboard or power plant, I just want to get a plot with minimal efforts. Having to edit the SVG or graphviz to "fix" poorly supported advanced features if I ever need them is fine, so long as I can plot most machines and it doesn't take hours. PlantUML is the only tool I've found that fit, which surprises me.