A Squeak Graph Library Ported from the Graphs.st goodie by Mario Wolczko. These classes add a collection category to represent collections tha tdo not necessarily have a sequence, but are more structured than sets. See the examples in Graph and RootedGraph. The package Graph-Morph includes Morphs that layout themselves as graphs. Currently, there are two layout methods: a springs-gravity model (based on the MathMorphs graphs originally implemented by Gerardo Richarte), and a animated radial layout inspired by http://citeseer.nj.nec.com/yee01animated.html