Fonts
http://developer.apple.com/internet/webcontent/css_fonts.html

Apple Inc.
2006

Abstract:

The ability to customize fonts— in Mac OS, in word processing documents, in Web pages— is really nothing new. However, when it comes to changing fonts on Web pages, the mechanism is decidedly less intuitive and certainly less than easy. Having to litter a Web page with FONT FACE tags makes for larger files, and larger headaches as you weed through these tags to find that one misspelled word. CSS makes the process of selecting a font easy, and even better, it provides a fallback mechanism for those times when users don'’t have the fonts you wanted to appear.