a discourse context which favors an identificational construal. An information gap is a proposition in the discourse context with a missing piece of information. Example: in So I learned to sew books. They're really good books. **It's just the covers that are rotten**, asserting that the books are really good evokes an information gap in that something is not good / rotten, since the books need repairing. The proposition with the information gap is the presupposed open proposition. (Section 11.4.1)