NLSY_BW                 NLSY Birth Weight.
NLSY_IQ                 NLSY IQ.
collect_par             Collect parameters from the short, intermediate
                        and auxiliary regressions
cplotbias               Create contour plot of bias
delfplot                Plot graph of function delta=f(Rmax)
dplotbate               Histogram of bias adjusted treatment effect
expand_border           Extend border of bounded box by +/- e
get_border              Identify all border points in a region
mycubic                 Compute roots of the cubic equation
mydisc                  Evaluates discriminant of the cubic equation
osterbds                Computes identified set according to Oster
                        (2019)
osterdelstar            Computes delta* according to Oster (2019)
ovbias                  Compute bias adjusted treatment effect taking
                        parameter vector as input.
ovbias_lm               Compute bias adjusted treatment effect taking
                        three lm objects as input.
ovbias_par              Compute bias adjusted treatment effect taking
                        data frame as input.
partocoef               Returns coefficients of the cubic equation
selectroot              Select root of the cubic based on the root of a
                        nearest point
split_nurr              Split a region into two parts
urrplot                 Region plot to demarcate URR and NURR for the
                        bounded box
