PWD_RL                  Weighted Deming - Rocke-Lorenzato - known
                        sigma, kappa
PWD_get_gh              Estimate of Variance Profile Functions
                        (proportional)
PWD_inference           Precision-Profile Weighted Deming Regression -
                        Inference
PWD_known               Weighted Deming Regression - general weights
PWD_outlier             Weighted Deming Regression - Outlier scanning
PWD_resi                Fit Rocke-Lorenzato profile model to residuals
WD_General              Weighted Deming Regression
WD_Linnet               Linnet proportional CV weighted Deming
multi_PWD               Multiple Instrument Weighted Deming Regression
multi_PWD_inf           Jack-knife inference on the parameters of the
                        Multiple Instrument fit
multi_PWD_inner         Multiple Instrument Parameter Estimation from
                        rho
multi_PWD_out           Locate and test for outliers of the fit
summary.pwdgetgh        Summary information of output from 'PWD_get_gh'
                        or 'multi_PWD'
summary.pwdinf          Summary information of output from
                        'PWD_inference' or 'multiPWD_inf'
summary.pwdknown        Summary information of output from 'PWD_known'
summary.pwdout          Summary information of output from
                        'PWD_outlier' or 'multi_PWD_out'
summary.pwdresi         Summary information of output from 'PWD_resi'
