EB-THETA-GrMM.SSC: Splus code for computing empirical Bayes estimates of                     latant variables.

std-res1-GrMM.ssc: Splus code for computing LTC adjusted standardized                        residuals at level 1.

std-res2-GrMM.ssc: Splus code for computing LTC adjusted standardized                        residuals at level 2.

 ma-res1-GrMM.ssc: Splus code for computing LTC adjusted standardized                        Mahalanobis residuals at level 1.

 ma-res2-GrMM.ssc: Splus code for computing LTC adjusted standardized                        Mahalanobis residuals at level 2.

    wils-hilf.ssc: Splus code for normalizing Mahalanobis distance

    plot-GrMM.ssc: Splus code for the residual diagnostic plots described in Section 4