"richard_chamberlain" <richard_chamberlain at ntlworld.com> writes on Sat, 10 Jun 2000 08:57:40 +0100: > A couple more: > > You could also look at: > > http://www.magicnet.net/~gcash/tree.html > or > http://www2.zyvex.com/OpenChem/index.htm or URL:http://www.handshake.de/~dieter/pyprojects/treewidget.html Dieter