The graphic abilities of the Macintosh computer make it ideal for CAD software. But until recently there were few options that took full advantage of this capability. Now the Mac user has several firstrate CAD programs to choose from. Some offer builder/designers much more than others do. To cut through the maze and pick the right program for your business, you need to know what features to look for and where to find them. Computer-aided design (CAD) programs won't make you a designer any more than a full tool kit will make you a carpenter. But a good CAD program can help you develop and modify a set of professionallooking building plans quickly and precisely. The Right Tools The best CAD programs