Many talented and hardworking folks gave their best effort to produce Mastering AutoCAD 2010 and AutoCAD LT 2010. I offer my sincerest gratitude to those people who helped bring this book to you.

Heartfelt thanks go to the editorial and production teams at Sybex for their efforts. Willem Knibbe, as always, made sure things got off to a great start and was always there for support. Pete Gaughan kept a watchful eye on the progress of the book. Paul R. Richardson III did an excellent job of ensuring that I didn't make any glaring mistakes and offered suggestions based on his own training experience. Kim Wimpsett kept things running smoothly and always had a positive attitude. On the production side, Rachel McConlogue kept the workflow going and answered my dumb questions during the review process, and Judy Flynn made sure I wasn't trying out new uses of the English language.

At Autodesk, special thanks go to Kathy O'Connell for taking the time from her busy schedule to write the foreword. Thanks for the kind words, Kathy. Thanks also go to Denis Cadu, who has always given his steadfast support of my efforts over many projects. Jim Quanci always gives his generous and thoughtful assistance to us author types—I'd be lost without your help, Jim. Finally, as always, a big thanks to Shaan Hurley and Lisa Crounse for generously allowing us to have a look at the pre-release software.

And, a great big thank you to my family and friends, who have always been a source of inspiration and understanding.