Try the label click thing.
digraph { rankdir=LR Alpha -> Beta [label="Transmutation"] }
Eric live coded this improvement to the Graphviz plugin with considerable explanation of the thought process he followed.
Eric's work was modularized in two distinct ways. First the code already correctly handled node labels so edge labels slipped in smoothly.
The build and deploy was also handled smoothly and we spend as much time discussing how he had made that work more reusable and related this to work we explored the week before.