SUBJECT: Nonlinear regression command, standard nonlinear curve fits AUTHOR: Patrick Royston Royal Postgraduate Medical School London SUPPORT: FAX (011)-44-81-740 3119 or write. COMMENTS: Use standard in1 installation instructions. From inside Stata, on-line help is available. Type 'help nlfcns'. The nl command itself, if not already installed, will be automatically installed when you install the official CRC updates into Stata's ado directory. Note: This entry is an update of sg1.4 on STB-11. It is not necessary, however, to have previously installed sg1.4. All programs and help files contained in the original insert are duplicated here.