lbcd                    Linearity Below Cut-off Dose
nlaad                   Non-linearity Across All Doses
nlbcd                   Non-linearity Below Cut-off Dose
noel                    No/Lowest Observed Effect Levels
prelimstats             Preliminary Statistics
segment                 Segmented Hockey Stick Test
smooth                  Dose-response Modeling with Smoothing Splines
spline.plot             Plot Spline
