Unlike other chapters in this book, this one covers a great deal of material with which you may already be familiar in some form. The goals of this organization of the material are
• To have it all in one place, where you can easily refer to it
• To present it in a way that has a somewhat different approach from what you may have seen in the past, one that’s particularly useful for graphics
Much of the chapter will be easy reading; the material will look familiar. To be sure it really is familiar, we include a number of exercises in the chapter itself; you should work through these exercises to be certain you really are understanding what you’re reading. ...