Coding of linear equations

[michaelm]

Hello everyone.

I have a question about coding equations in Dynare. My question is about coding linear equations.
Suppose that one of my equations is as follows:

Now I see that the coding of this equation is done as follows:

My question: is it correct to consider everything that comes before the variables (in the form of steady state) as a parameter? ie , txnoybar is a parameter , txoybar is a parameter
And in the parameters block: alpha, betta, …txnoybar , txoybar

Or should we write as follows? :

And in the parameters block: alpha, betta, …rer_bar,o_bar,ybar,…
Or is there no difference between these two writings and both are correct?

[jpfeifer]

There is a difference in that the expression in front of the variables are themselves functions of the deep parameters. E.g. \bar y will be a function \beta. You need to make sure to take this parameter dependence into account when e.g. estimating the model.