JViews Framework package provides the base functionality for graphics applications built with ILOG JViews products. It handles the creation and manipulation of basic graphic objects such as lines, rectangles, and labels, as well as any of the custom objects that you might create. JViews Framework also provides the optimized data structures that allow the graphic objects to be panned, zoomed, and selected with optimal performance. Finally, it provides a set of behaviors that can be used to define the user interactions with the display and the graphic objects. All the other ILOG JViews packages rely on JViews Framework for these core-level services.