Mr. Rodelio P. Barcenas
Computer Engineering Department
Don Bosco Technical College

What is HTML or HyperText MarkUp Language?

HTML is a web document which contains hyperlinks to other web documents. Unlike a book, this can be treated as a linear document wherein pages are contained in one physical location. A web page can contain hundreds of pages which can be found in different locations around the world. Readers of the web page can feel that he is just reading a sequence of pages but in reality informations came from different location.

Some advantages of HTMLs vs Linear Documents.

• Readers can read at their own pace
• Easily Update on documents
• Contains Videos, Sound and images

Web Servers and Web Browsers

Here is an illustration on how the web operates.

A Web Browser is the client while the Web Server is the respondent. The web browser request for files while the http server makes the transaction possible. You will see at this point a client - server scenario.

Types of Browsers

• MOSAIC (oldest)
• Netscape Communicator/ Navigator
• Microsoft IE
• SUN Hot Java
• Others

Versions of HTML

Version	Description
HTML 0.0	The Original Version developed by Timothy Berners - Lee and other researchers at CERN, it has long been replaced by other versions of HTML
HTML 1.0	The first public version of HTML, which included support for inline images and text controls. Some browsers, most notably the text based LYNX browser on the UNIX systems, operate at the 1.0 level
HTML 2.0	The version supported by all graphical browsers, including Netscape Navigator, Mosaic and Internet Explorer, It supported interactive form elements such as option buttons and text boxes. A document written to follow 2.0 specification would be readable by most browsers on the internet.
HTML 3.2	This version is also reffered to as HTML+. It includes more support for creating and formating t ables and expands the options for creating interactive form elements. It also allows for the creation of complex mathematical equations.