The utilities discussed in the previous section are just a few samples of the many available for Auto- CAD. You can find several sources on the internet for AutoCAD utilities from simple macros to complete plug-in applications. www. autodesk .com offers a listing of third party products designed for AutoCAD.Finally, the companion CD included with this book contains some freeware and share- ware utilities.
Also on the CD, I have included my own AEC (architecture, engineering, civil) software offering basic architectural utilities, such as a symbols library, automatic door and window insertion program, and reference symbols. If you're using AutoCAD's 3D features, you'll also want to check out the Eye2eye 3D viewer. Eye2eye lets you easily create perspective views by using a camera and target object. For more information about what is included on the companion CD, see the inside back cover and the CD itself.