Topic summary
The web

Extracted from the Wikipedia article World Wide Web.
Function
The web browser parses the HTML and interprets the markup (<title>, <p> for paragraph, and such) that surrounds the words to format the text on the screen. Many web pages use HTML to reference the URLs of other resources such as images, other embedded media, scripts that affect page behaviour, and Cascading Style Sheets that affect page layout. The browser makes additional HTTP requests to the web server for these other Internet media types. As it receives its content from the web server, the browser progressively renders the page onto the screen as specified by its HTML and these additional resources.