Although changes in the CAD model are not planned, they are certainly possible. Three database files are associated with the file. One contains information about the individual blocks that remain in situ. A second contains information about the layer names. The current versions of the database files also date to February, 1996.
Images associated with the file are of two kinds.
Changes to correct very minor errors may not be noted. The file will be migrated as necessary to new CAD formats. The model, database files, drawings, and photographs are copyrighted by the Center for the Study of Architecture. Users should not cite the drawings, since they are not archived and may not always be available for reference. However, CSA will readily grant free use of the materials for scholarly purposes.