 any browser to read the instruction and format the text accord- ing to the workstation being used. The data present in the main text and the formatting instructions used to format the data are both represented as ASCII characters, SO that every type of server can receive and interpret the document. The Web page has two parts: the head and the body. The head is the first part of the Web page that contains the page title and other parameters that the browser will use. The text in the body makes up the actual content of the Web page. The appearance of the text can be modified by embedding tags into the text (see Figures 28.4 through 28.9). The tags that define the document appearance are present in the body of the Web page. A tag comes in pairs-the beginning tag bearing the tag name and the ending tag with a slash followed by the tag name. Both the tags are enclosed in symbols < and >. <HTML> </HTML> Defines HTML document <HEAD> </HEAD> Defines document head <BODY> </BODY> Defines document body Figure 28.4 HTML skeletal tags. Boldface Italic Underlined <SUB> </SUB> Subscript <SUP> </SUP> Superscript Figure 28.5 HTML text formatting tags. Fundamentals of EMS, NMS and OSS/BSS <TITLE> </TITLE> Defines document titles </Hn> Defines headers (n is an integer) Figure 28.6 HTML title and header tags. <CENTER> </CENTER> Centered </BR> Line break Figure 28.7 HTML dataflow tags. </OL> Ordered list </UL> Unordered list </LI> An item in a list Figure 28.8 HTML list tags. Image <IMG> </IMG> Defines an image Hyperlink Defines an address (hyperlink) Executable contents <APPLET> </APPLET> Document is an applet Figure 28.9 HTML image, hyperlink, and Applet tags. 2. Programming for dynamic documents Consider a dynamic document example that involves collection of the time stamp on the server to map logs obtained in the client to the time it was send from the server. Here the information is dynamic and changes from moment to moment. In this scenario, the client can request the server to run the sys- tem command that generates the data 