A markup language is simply a set of tags used to tell the browser how to format the text. In the case of web pages, the browser is a web browser like Netscape or Lynx. Most browsers create a blank line where this tag appears.
Many tags come in pairs, with a beginning tag and a closing or ending tag.
You only see their effect. The most common element found in the head section is the title, which is the text that gets displayed on the window bar of Netscape or in the upper right corner of the Lynx window. Now we need to fill in the body of the file. The body contains the meat of the page - all the information and images. The H1 tag makes the text as large as possible.