Each of the dilogic diagrams contain five links to provide additional details: an overview, and "more" links for each of the four fields A, B, not-A and not-B. You are now in the "overview" for the Day and Night dilogic diagram. This is the place where further descriptive information is provided that applies to the meaning of the overall complementary pair, (A and B). The "more" links give details about each of the individual theses.
In some cases the overview or the "more" links will be empty, as they are unnecessary or still under construction.