Converts objects that enclose an area into a 2D region object.
Regions are 2D areas that you create from closed planar loops of objects. Valid objects include polylines, lines, circular arcs, circles, elliptical arcs, ellipses, and splines. Each closed loop is converted into a separate region. All crossing intersections and self-intersecting curves are rejected.
REGION deletes the original objects after converting them to regions unless the system variable DELOBJ is set to 0. If the original objects were hatched, hatch associativity is lost. To restore associativity, rehatch the region.
After you have converted objects to regions, you can combine them into a complex region using union, subtract, or intersect operations.
You can also create a region with the BOUNDARY command.