The syntax below was used for a three class LGMM with 7 time points.I am trying to understand the syntax, which I find peculiar in the way it defines the growth factors and also in the way it handles the variances and covariances. In other words, does the syntax below sound any general alarm bells? Help is greatly appreciated. %OVERALL% i BY lfsat05_pre@1 lfsat03_pre@1 lfsat01_pre@1 lfsat00_pre@1 lfsat01_pos@1 lfsat03_pos@1 lfsat05_pos@1;