The management of the electronic information is a very important field nowadays. Relational database systems {(RDBS)} are widespread solutions, but text-based documentation, like product manuals, could not be squeezed into rows, columns, and cells. The Extensible Markup Language {(XML)} is a new standard that describes text documents in a structured format. It is based on the {SGML} {ISO} standard, and was primary designed for the World Wide Web. In this paper we introduce how web-based electronic product manuals can be build using {XML} technology. After a short presentation of the {XML} components, we concentrate on the main advanced features in product manuals using {XML.} Finally, we present a prototype system for implementing {XML-based} product manuals.