I would just like to express my thanks to the anon. author of the "notes on model fitting functions" on the developer page. They proved to be very helpful today for some updating of my quantreg package. url: www.econ.uiuc.edu/~roger Roger Koenker email rkoenker@uiuc.edu Department of Economics vox: 217-333-4558 University of Illinois fax: 217-244-6678 Champaign, IL 61820