This document provides an overview of static web documents and markup languages. It discusses HTML, the basic building block of the World Wide Web, and how it uses tags to structure and format web pages. It also covers advantages of markup languages like HTML, how they allow browsers to reformat pages across different displays. The document outlines key HTML tags and concepts like headings, hyperlinks, forms, tables, and images. It then introduces XML and XSL as languages to structure web content separately from formatting. Finally, it discusses XHTML as the next evolution of HTML and key differences between HTML and XHTML.