From the README file:
    RasMol is a molecular graphics program intended for the visualisation 
of proteins, nucleic acids and small molecules. The program is aimed at 
display, teaching and generation of publication quality images. The program 
has been developed at the University of Edinburgh's Biocomputing Research 
Unit and the Biomolecular Structures Group at Glaxo Research and Development, 
Greenford, UK. 

http://klaatu.oit.umass.edu/microbio/rasmol/index.html