If you’re reading this book on an eReader, we want to point out that reading the code may be tricky at times. Longer lines of code will wrap to a second line based on the current font size. This bothers us because we’re really conscientious at Big Nerd Ranch about the way our code appears on the page. Clear visual patterns in code make code easier to understand.

When you get to the point where you’re actually typing in code, we suggest opening the book on your Mac in Adobe Digital Editions. (Adobe Digital Editions is a free eReader application you can download from http://www.adobe.com/products/digitaleditions/.) Make the application window large enough that you can see the code with no wrapping lines. You will also be able to see the figures in full detail.