Thanks very much Henry - I have been unable to post for 3-4 days and would
have sent a similar message otherwise. Crossposting makes it very difficult
to follow threads and means that the discussions can't easily be located in
the archives or digests.
P.
Peter Murray-Rust, Director Virtual School of Molecular Sciences, domestic
net connection
VSMS http://www.nottingham.ac.uk/vsms, Virtual Hyperglossary
http://www.venus.co.uk/vhg