Nested_Stats_S0         Predictive Accuracy Testing for Nested
                        Environment S^0
Nested_Stats_Sbar       Predictive Accuracy Testing for Nested
                        Environment SBar
dm_cw                   Diebold-Mariano Test and Clark & West Test
lr_var                  Heteroskedastic Long run variance
recursive_hstep_fast    Forecasting h-steps ahead using Recursive Least
                        Squares Fast
recursive_hstep_slow    Forecasting h-steps ahead using Recursive Least
                        Squares Slow
