EXPECTATION() operator and restricted information set

[ripatti]

Dear Musketeers,

DynareWiki gives (dynare.org/DynareWiki/AuxiliaryVariables) an impression that it is possible to have different information sets in the model. Namely:

This is an aux var which is a substitute for an expression like EXPECTATION(…information set…)(…).

Where I can find more information regarding the idea and the syntax of the command. It seems that manual is mute about this?

Dynare 4.1 release says (about EXPECTATION operator):

Note that a value of 0 for the time shift component is reserved for partial information models (not yet fully implemented).

Is it still under construction?

Best regards,
Antti