ABSTRACT
This chapter explores one of the most widely used Internet services: the World Wide Web. It introduces the concept of hypermedia, and describes how documents are linked together. Like all Internet services, the World Wide Web is not built into the Internet. Instead, the service runs on computers attached to the Internet, and follows the client server form of interaction. Many web servers attached to the Internet store information. To access the information, a user launches a web browser. The information on a web server is divided into web pages, and a browser fetches one page at a time. A user must specify the correct web server and a web page on the server. To do so, a user enters a Uniform Resource Locator (URL). A URL is a string of characters divided into several parts by punctuation characters. Browsing systems that used hyperlinks among pages on multiple servers were known as hypertext systems.
