The document defines various terms related to web design and browsers: - It describes key terms like websites, web pages, URLs, browsers and their functions. - It also covers HTML, protocols like HTTP and FTP. Internet concepts like networks and the internet are explained. - Various web browsers both past and present are listed along with their creators/companies like Internet Explorer, Firefox, Chrome, Opera, Netscape and others. - Basic principles of web design and planning a website are outlined. The history and format of domain names is also summarized.