deba [Thu, 11 Aug 2005 13:16:39 +0000] rev 1622
Ordering in the graph concept.
deba [Thu, 11 Aug 2005 13:15:03 +0000] rev 1621
Sym graph removed
alpar [Thu, 11 Aug 2005 13:07:54 +0000] rev 1620
Start working on UndirGraph concept clarification and its harmonization with
the directed graph concept.
Not yet done!!!