Chapter 1. INTRODUCING HTML AND XHTML
Less than twenty years after its invention, the World Wide Web has become ubiquitous. Today, there are tens of billions of Web sites worldwide, and the number continues to grow at an almost exponential rate. There are many factors that have contributed to the growth of the Web, but one of the most important is that Hypertext Markup Language (HTML), the language in which Web pages are written, is easy to learn, and best of all, free.