Date: Oct. 13, 2000
Link: http://www-4.ibm.com/software/developer/library/w-xhtml.html
Source Author or Organization: Molly Holzschlag, IBM developerWorks

This is a concise tutorial on eXtensible HyperText Markup Language (XHTML), the reformulation of HTML as an XML application, eXtensible HyperText Markup Language (XHTML). The author covers the basics an HTML author needs to understand for making a transition to creating XHTML documents, and discusses the state of XHTML adoption in web page development. Includes links to XHTML resources.