NONLIN v2.4 <ASP> - Linear and nonlinear
regression statistics. Nonlin determines the
values of parameters for an equation, whose
form you specify using ordinary algebraic
notation, that cause the equation to best
fit a set of data values.  Handles linear,
multivariate, polynomial, and general
nonlinear equations. Also plots data and
equation. Nonlin is the best shareware
regression program available.