Updates: Status: Fixed
Comment #1 on issue 826 by alexandr...@gmail.com: Roassal hover popup on edges http://code.google.com/p/moose-technology/issues/detail?id=826
Fixed in Roassal 1.99
Try: | view | view := ROMondrianViewBuilder new. view shape rectangle size: 30. view nodes: (1 to: 2). view interaction on: ROMouseEnter do: [:ann | Transcript show: ann printString ; cr ]. view edgeFromAssociation: 1 -> 2. view open