Has anyone managed to create a palette for Southbeach Notation?
I started down the road with simply altering rectangle colours, &c., but the double walled rectangle stumped me since you can't group without creating a group node. If there were a double line style, perhaps I could get there, but the edges are a bigger problem.
Well, the "Focus of Attention" node may be achieved with a creative use of HTML formatted label text:
Custom edges, however, are currently not supported. The only option here seems to be working with labeled default edges.