The Exposure Boundaries report graphically shows the boundaries around each diaphragm of each story that the program uses to calculate the diaphragm forces for the automatically generated wind load cases. For each diaphragm, the diaphragm is shown with the diaphragms above and below that create the boundaries. The various "zones" are labeled, and the beginning and end points and height (the sum of the story heights between diaphragms) of each zone are listed. If the boundary is defined by a parapet, it is identified as such. The information given in the report for beginning and end points and for parapets is based on the exposure data given in the Loads – Exposure command, as reported in the Criteria, Mass and Exposure report.