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st: D. Time series operator

From   Diana Eastman <>
To   <>
Subject   st: D. Time series operator
Date   Thu, 13 Nov 2008 13:16:27 -0500

I know that D., generates differences of any order. Could someone
explain how to interpret 
D(0/1).(dummyvar1 dummyvar2) 

Specifically, what does (0/1) do with regards to the differencing?

The context of this is an instrumental variable regression.

Thank you in advance.

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