writes the correlation matrix of the parameter estimates to the OUTEST= data set.
In addition, any of the following MODEL statement options can be specified in the PROC TSCSREG statement: CORRB, COVB, FIXONE,
FIXTWO, RANONE, RANTWO, FULLER, PARKS, DASILVA, NOINT, NOPRINT, M=, PHI, RHO, and SINGULAR=. When specified in the PROC TSCSREG
statement, these options are equivalent to specifying the options for every MODEL statement.