content: ...so S T O P; don't buy this book. It's Junk. Anyone who's been in the profession a while knows it because many of us received it as a Designer's Book Club intro title in the late 80's or early 90's. It wasn't worth the cost of its S&H! Ask around to people in the profession and look it over first. I received mine while having just a few years of experience in practice. Initally excited and impressed with myself having identifed a clear technical error, my feelings quickly changed to surprise and then anger as I began to realize the whole book was packed w/ errors and critical omissions. It was generally a frustratingly incompetent presentation with widely incomplete information on its proposed subjects. That the editors and publisher let this trash out, and were, I presume, making their livings with this level of incompetence was disheartening.