fit.control             Auxiliary parameters to control the model
                        fitting.
kinkTest                Test the existence of kink effect in the
                        multi-kink quantile regression
mkqr.bea                Fit the multi-kink quantile regression in
                        absence of the number of change points.
mkqr.fit                Fit the multi-kink quantile regression
                        conditonal on a given or pre-specified number
                        of change points.
triceps                 Triceps skinfold thichness dataset
