pre(varlist [, lagstruct(prelags, premaxlags)]) specifies that a set of
predetermined variables be included in the model. Optionally, one
may specify that prelags lags of the specified variables also be
included. The default for prelags is 0. Specifying premaxlags sets
the maximum number of further lags of the predetermined variables
that can be used as instruments. The default is to include T_i-p-1
lagged levels as instruments for predetermined variables. You may
specify as many sets of predetermined variables as you need within
the standard Stata limits on matrix size. Each set of predetermined
variables may have its own number of prelags and premaxlags.
endogenous(varlist [, lagstruct(endlags, endmaxlags)]) specifies that a
set of endogenous variables be included in the model. Optionally,
one may specify that endlags lags of the specified variables also be
included. The default for endlags is 0. Specifying endmaxlags sets
the maximum number of further lags of the endogenous variables that
can be used as instruments. The default is to include T_i-p-2 lagged
levels as instruments for endogenous variables. You may specify as
many sets of endogenous variables as you need within the standard
Stata limits on matrix size. Each set of endogenous variables may
have its own number of endlags and endmaxlags.
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