ksmooth                  Kernel Regression Smoother
loess                    Local Polynomial Regression Fitting
loess.control            Set Parameters for Loess
loess.smooth		 Simple Smoothing via Loess
plot.ppr                 Plot Ridge Functions for Projection Pursuit
                           Regression Fit
ppr                      Projection Pursuit Regression
predict.loess            Predict Loess Curve or Surface
predict.smooth.spline    Predict from Smoothing Spline Fit
scatter.smooth           Scatter Plot with Smooth Curve Fitted by Loess
smooth.spline            Fit a Smoothing Spline
supsmu                   Friedmans's SuperSmoother