st: Constraint statement in REG3

["Hsu, Lucy" <LHsu@s-3.com>]

Hi,

I am running REG3 and I am not sure how to incorporate the constraint
statements.  
Does Stata allow more than two subtractions in a constraint statement?  For
example
, could I write the following code for one constraint?

Constraint define 1 [prvins]a = [prvins]b = [privins]c = [prvins]d=[prvins]e

Thanks,

Lucy
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