Apple doesn't license PDF from Adobe even though it is part of OS X's native graphics renderer. “The Quartz renderer and the PDF interpreter that Apple ships w

Apple doesn't license PDF from Adobe even though it is part of OS X's native graphics renderer. “The Quartz renderer and the PDF interpreter that Apple ships with Mac OS X are built with Apple code, with no external licenses, by Apple employees. Adobe just publishes a specification for how it’s supposed to function. This gives Apple considerably more flexibility with regard to what Quartz and the PDF interpreter can be used for.” http://www.prepressure.com/pdf/basics/osx_quartz http://www.prepressure.com/pdf/basics/osx_quartz