deba [Sat, 14 May 2005 17:37:33 +0000] rev 1420
Smart reference handling in map adaptors
deba [Sat, 14 May 2005 17:34:31 +0000] rev 1419
Added backward and forward map.
Converting UndirEdge -> Edge
deba [Sat, 14 May 2005 17:32:11 +0000] rev 1418
Handling smarter the references
It's used by the lemon IO and proposed by the adaptors.