The idea is that a graph is an unstructured set of dataitems with an
associated method to allocate and deallocate new items. You can have
pointers to the items in a graph, but they are only valid in the
context of that graph. This way, all the headaches usually associated
with pointers disappear.
I don't know whether Henri invented the graph idea or got it from
somewhere else, and I don't have the thesis or papers handy to check...
-- Jack Jansen | If I can't dance I don't want to be part of Jack.Jansen@cwi.nl | your revolution -- Emma Goldman uunet!cwi.nl!jack G=Jack;S=Jansen;O=cwi;PRMD=surf;ADMD=400net;C=nl