This book would never have seen the light of day if it were not for many friends and colleagues who assisted me along the way. Some helped as technical reviewers, some as consultants, some as encouraging voices, and all as solid supporters. I am grateful to all of you. Thanks go to Frans De Jong, Santosh Doss, Brad Gilmer, Jacob Gsoedl, Mark Johnston, Greg Lowitz, Bill Moren, Harlan Neugeboren, Charles Poynton, Michel Proulx, John Schmitz, and Joanne Tracy.