SUBJECT: Nonlinear regression (derivative free) AUTHOR: Francesco Danuso, Ph.D., Universita degli Studi di Udine, Istituto di Produzione Vegetale, Udine, Italy. (English adaptation & revision: Joseph Hilbe, Editor) SUPPORT: FAX, either Dr. Danuso, 011-39-432-558603, or STB Editor, 602-860-1446 COMMENTS: Use standard in1 installation instructions. From inside Stata, on-line help is available. Type 'help nonlin'. (It has been pointed out tht the output produced by nonlin displays the incorrect number of iterations. This update fixes that problem.)