Value of planner objective function

The Rasemy routine of Dynare reports two values of planner objective function.
How does Dynare calculate these values? I am wondering if we can use
these values to rank alternative policy mix.
For example, compare welfare under different policy instruments: labor income tax or capital tax.


Please have a look at the manual of the unstable version. It documents the computation of these objects. And yes, it should allow you to rank alternative policies.