clear all
log using c:\spxttobit.smcl , replace
 sysuse spxttobit.dta, clear
spxttobit ys x1 x2 , wmfile(SPWxt) wmat(W) id(7) gmm(1)
spxttobit ys x1 x2 , wmfile(SPWxt) wmat(W) id(7) gmm(2)
spxttobit ys x1 x2 , wmfile(SPWxt) wmat(W) id(7) gmm(3)
spxttobit ys x1 x2 , wmfile(SPWxt) wmat(W) id(7) gmm(1)
spxttobit ys x1 x2 , wmfile(SPWxt) wmat(W) id(7) stand
spxttobit ys x1 x2 , wmfile(SPWxt) wmat(W) id(7) aux(dcs1 dcs2 dcs3)

spxttobit ys x1 x2 , wmfile(SPWxt) wmat(W) id(7) gmm(1) noconstant
spxttobit ys x1 x2 , wmfile(SPWxt) wmat(W) id(7) gmm(2) noconstant
spxttobit ys x1 x2 , wmfile(SPWxt) wmat(W) id(7) gmm(3) noconstant
spxttobit ys x1 x2 , wmfile(SPWxt) wmat(W) id(7) gmm(1) noconstant
spxttobit ys x1 x2 , wmfile(SPWxt) wmat(W) id(7) stand noconstant
spxttobit ys x1 x2 , wmfile(SPWxt) wmat(W) id(7) aux(dcs1 dcs2 dcs3) noconstant

log close