The box windows are being...boxed. We're adding a layer of rigid foam and low expansion foam in addition to the OBC requirement just to give a little stability to the window and eliminate voids between the jamb and the insulated framing around the window.
My trim carpenter, Adriano (AKA Oscar.... long story) has brought his crew and started the big job of getting the boxed windows and extended jambs throughout the house put in. He's got quite a bit of work to do for a house of this size.