<p>Many of the animals on O'Reilly covers are endangered; all of them are important to the world. To learn more about how you can help, go to <ahref="http://animals.oreilly.com">animals.oreilly.com</a>.</p>
<p>The cover illustration is by Karen Montgomery, based on a black-and-white engraving from a loose plate, origin unknown. The cover fonts are Gilroy Semibold and Guardian Sans. The text font is Adobe Minion Pro; the heading font is Adobe Myriad Condensed; and the code font is Dalton Maag's Ubuntu Mono.</p>