You might find http://www.ch.ic.ac.uk/svg/ interesting to compare with the conventional "GIF" image format for illustrating chemistry on the Web. For much of chemistry, I believe the XML based SVG is a substantial improvement over bitmaps. The full features of the SVG specification which include animation, printability, etc seems full of potential in chemistry. Henry Rzepa. Imperial College, Chemistry Dept. +44 171 594 5774 (Office) +44 171 594 5804 (Fax) chemweb: A list for Chemical Applications of the Internet. To post to list: mailto:chemweb@ic.ac.uk Archived as: http://www.lists.ic.ac.uk/hypermail/chemweb/ To (un)subscribe, mailto:majordomo@ic.ac.uk the following message; (un)subscribe chemweb List coordinator, Henry Rzepa (mailto:rzepa@ic.ac.uk)