Tom, I would strongly echo the advice of Duncan and Marc and others already on this thread to seek expert legal advice on this issue. At Revolution we rely on the expertise of Mark Radcliffe, the General Legal Counsel of the Open Source Initiative. (Additional information here: http://www.revolutionanalytics.com/downloads/gpl-sources.php .) Because GPL issues draw on aspects of copyright law, contract law, and other legal domains (that can also vary by jurisdiction), legal advice with expertise in all the relevant areas is essential.
Hope this helps, # David Smith -- David M Smith <da...@revolutionanalytics.com> VP of Marketing, Revolution Analytics http://blog.revolutionanalytics.com Tel: +1 (650) 330-0553 x205 (Palo Alto, CA, USA) ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.