| There are many commercial browsers that interpret | | | | format the WebPages. The idea came from the |
| and display a web document. Almost all of them use | | | | book publishing industry. Before a book goes for its |
| the same architecture. The browser is usually is made | | | | final printing, a copy editor reads the manuscript and |
| of three parts: controller, client programs, and | | | | puts a lot of marks on it. These marks tell the |
| interpreters. The controller gets input from the | | | | designer how to format the text. In HTML, to make |
| keyboard or the mouse and uses the client program | | | | a part of the text to be displayed bold face, we |
| to access the document. | | | | must include the beginning and ending boldface |
| After the document has been accessed, the | | | | markup tag in the text. |
| controller uses one of the interpreters to display the | | | | The two marks and are instructions for the browser. |
| document on the screen. The client program can be | | | | When the browser sees these two marks, it knows |
| one of the methods such as HTTP, FTP, Gopher or | | | | that the text must be boldface. A markup language |
| Telnet. The interpreter can be HTML, CGI, or JAVA, | | | | like HTML allows us to embed formatting instructions |
| depending on the type of document. Documents in | | | | in the file itself. The instructions are stored with the |
| the World Wide Web can be grouped into three | | | | text. In this way, any browser can read the file itself. |
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| Hypertext markup language is a mark up language | | | | format the text according to the workstation being |
| for writing web pages. It is called a markup language | | | | used. HTML has changed the concept of E |
| because the only thing it does is let the browsers | | | | commerce. |