TekCAD 2002, from TekStar International, Longwood, Fla., is a three-dimensional geometry generator that creates and manipulates complex forms through either mathematical or freehand interfaces. The approach is based on vertices and edgeslike Tinker-Toysjoined in any 3D arrangement. Objects may be adjusted graphically or by numeric input. Designs can be exported as .DXF files for inclusion in other CAD projects.