Updated -p to show the equation, parameter meanings, and named values. Your

example now prints:

fit 'exp_plateau': f(x) = Aexp(bx) + C A: initial offset from C; f(0) = A + C. b: exponential rate (inverse x units); b < 0 means decay toward C. C: plateau approached as b*x -> -infinity. x: input coordinate (time for a time series). component 0: A = 0.188459978252 b = -8959.07543391 C = 1.22691657531

All built-in models have descriptions. Full precision remains in the returned dataset. Verified: 113 tests passed.