Hello, I've read several threads about nongui use of chimera and that some work was started. This work seemed mainly aimed at getting a web server script to run chimera and return some result back to a browser. I'm interested in running chimera in a stand alone python script. I'd like to do molecular calculations using the various tools but all on a command line, no graphics. It seems the --nogui option would get this, but the OS X version does not seem to implement that. Perhaps I'm missing something. Can anyone help? ideally I'd like to just have a plain python script that imports the chimera package but does not choke on all the graphics stuff, and then lets me use the chimera object model and other programming objects. Thanks for any assistance, Jim ---- James J. Vincent, Ph.D. National Cancer Institute National Institutes of Health Molecular Modeling and Bioinformatics Section Laboratory of Molecular Biology Building 37, Room 5120 37 Convent Drive, MSC 4264 Bethesda, MD 20892 USA 301-451-8755 jjv5@nih.gov