This is really just a design philosophy: http://damieng.com/blog/2007/06/13/font-rendering-philosophies-of-windows-and-mac-os-x http://damieng.com/blog/2007/06/

This is really just a design philosophy: http://damieng.com/blog/2007/06/13/font-rendering-philosophies-of-windows-and-mac-os-x http://damieng.com/blog/2007/06/13/font-rendering-philosophi... PDF (technically Quartz PDF) is the native format for OS X, so that may be part of the reason why it seems like their text rendering attempts to mimic print like this.