Users can import components or use the built-in 3D modeler. A parameterized history makes it easy to modify and reanalyze models. Portions of code can be saved as scriptlike shortcuts, a useful feature for designers often creating variations of similar products, such as antennas. Vector Fields Inc., 1700 N. Farnsworth Ave., Aurora, IL 60505, (630) 851-1734, vectorfields.com.