estfun                  Extract Estimating Functions
isoacf                  Isotonic Autocorrelation Function
kweights                Kernel Weights
vcovHAC                 Heteroskedasticity and Autocorrelation
                        Consistent (HAC) Covariance Matrix Estimation
vcovHC                  Heteroskedasticity-Consistent Covariance
                        Matrix Estimation
weightsAndrews          Kernel-based HAC Covariance Matrix Estimation
weightsLumley           Weighted Empirical Adaptive Variance
                        Estimation
