This paper tries to introduce some new elements into the HTML language. The purpose of these elements is to create documents that can contain different pieces of information at the same time. These various pieces of information can be presented to the user on demand. Some possible applications and solutions are also given.

This page lists and provides links to standard DTDs and SGML declarations for HTML and its successor language, XHTML.

Includes the basics of creating an XHTML webpage.

Quick reference of XHTML 1.0 tags.

Describes and defines the term 'XHTML.'

Complete reference with examples and relevant links to the W3C standard.

Complete reference with examples and relevant links to the W3C standard.

A listing of many XHTML codes for non-standard ASCII characters.

An overview of the modularization of XHTML.

Syntax and structure of every XHTML element, organized logically for quick access.