If you’re reading this book on a eReader, we want to point out 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 that code easier to understand.

Therefore, 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 so that you can see the code with no wrapping lines. You will also be able to see the figures in full detail. Using your eReader together with Adobe Digital Editions on your Mac will give you the best of both worlds: convenient, portable reading and the chance to examine the code in its intended form.