O’Reilly has announced the release of “Modding Mac OS X: Extreme Makeovers for Your Mac,” a new book by Erica Sadun that aims to show readers how to take advantage of the undocumented power that lies beneath the surface of Mac OS X. The US$24.95 title starts out with the very basics of configuring your Mac and goes on to show you how to: find hidden features in your favorite applications; give your Dock a makeover; dive inside application bundles to find secret resources; explore application and system resources; customize application icons; hack property list files; discover undocumented preferences; alter an application’s interface; script the unscriptable; and more.