This might be of interest to some people in these lists. The latest issue of Science (vol 299, 14 Febr. 2003), on p. 990, mentions a recent report from the National Academy of Sciences that deals with some guidelines for the sharing of data and research materials in the life sciences. The NAS report can be accessed from http://bob.nap.edu/books/0309088593/html/ and the most relevant pages, regarding making code available, are pp. 20-23 and p. 27. -- Ramón Díaz-Uriarte Bioinformatics Unit Centro Nacional de Investigaciones Oncológicas (CNIO) (Spanish National Cancer Center) Melchor Fernández Almagro, 3 28029 Madrid (Spain) http://bioinfo.cnio.es/~rdiaz