st: 2 parameter MLIRT polychotomous model simulation

[Marcello Pagano <pagano@hsph.harvard.edu>]

I am trying to simulate 2-Parameter MLIRT polytomous models in Stata. 
Could someone pls suggest how I can do it? I came across simirt program 
but I dont understand how to specify that each item should have, say, 4 
categories and specify its discrimination parameter (because the rsm 
option cannot be used with the disc option).

Could someone clarify/give suggestions please?

Thanks

Prathiba Natesan
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