http://pps97.cryst.bbk.ac.uk/course/section10/index.html
Also, the transcript of the RasMol BioMoo can be found at :-
http://pps97.cryst.bbk.ac.uk/biomoo/biomoo-12-5-97.html
Cheers,
Dave H.
Dave Houldershaw
PPS'97 Technical Coordinator
Dept. Crystallography, Birkbeck Coll. London
tel:- 0171 631 6853 fax:- 0171 631 6803
"In the beginning, there was nothing, which exploded." - Terry Pratchett