DemoBS                  Demonstrate the construction of ordinary
                        B-splines
DemoKnots               Demonstrate ordinary cubic B-splines on three
                        types of knots
DemoNull                Demonstrate the null space of P-splines
DemoPBS                 Demonstrate the construction of periodic
                        B-splines
DemoSpl                 Demonstrate a polynomial spline and its
                        B-spline representation
GramBS                  Gram matrix of B-splines
MakeGrid                Make a grid of x-values between domain knots
PlaceKnots              Automatically place knots according to data
gps2GS                  Penalized B-splines estimation with automatic
                        grid search of their smoothing parameter
penalty                 Wiggliness penalties for penalized B-splines
penutils                Utility functions for working with wiggliness
                        penalties
periodic                Design matrix and general difference matrices
                        for periodic B-splines
rspl                    Simulate random cubic splines
