Style Sheets (Subscribe)
Links
CSS and XSL: which should I use?
http://www.w3.org/Style/CSS-vs-XSL
Brief article from W3C with a diagram of the markup-to-presentation process for HTML and XML documents.
JSSS: JavaScript-Based Style Sheets
http://www.w3.org/Submission/1996/1/WD-jsss-960822
Overview of Netscape's proposed JavaScript based style system. Historical.
Web Style Sheets
W3C's authoritative overview of style sheets for the web.