MR.mean                 Multiply Robust Estimation of the Marginal Mean
MR.quantile             Multiply Robust Estimation of the Marginal
                        Quantile
MR.quantreg             Multiply Robust Estimation for Quantile
                        Regression
MR.reg                  Multiply Robust Estimation for (Mean)
                        Regression
def.glm                 Define a Generalized Linear Model
def.quantreg            Define a Linear Quantile Regression Model
