Book excerpt: Ready to learn not just the "how," but also the "why" behind the most powerful features of Photoshop? Adobe Photoshop CS2 Studio Techniques goes beyond conventional step-by-step instruction to deliver an under-the-hood understanding of the world's leading image-editing application. This award-winning, best-selling guide leads you through essential new features and useful techniques in a fun, easy-to-read format. Book jacket.