Is there a name for this sort of editor, usually seen for defining shaders?:

Also, are there generic tools for this sort of thing, for domains outside of graphics?

I'm working on a game with modular sort of event system, where there's a generic handler for, say, 2 characters dancing. Another event would instantiate a dance, setting up who will be dancing, what the tempo is, etc. I think the easiest way to design the events would be a tool like this, where I can drag connections between them. But I don't know what to call it, so I can't find it online =). It's like a finite state machine editor, but the attributes seem to make it something else. Any pointers would be appreciated!

If anybody reads this later and also wants an answer, I was finally able to find leads searching for "visual programming", of which a subset were this type of interface. I'm going with Vistrails, which is aimed at scientific workflow and visualization, but lets you define your own nodes and export the workflow to xml.

yes it is! thank you!