Example Pages from the XML, HTML and All That

Simple Example XML document
test.xml (plain text )
test-style.xml - with a CSS style sheet. (plain text, style sheet )

MathML Information
http://www.w3.org/Math/
http://www.software.ibm.com/techexplorer/ (IBM TechExplorer download. The download includes example MathML files)

SMIL Information
http://www.w3.org/AudioVideo/
http://www.real.com (RealAudio G2 Player download)
otslocal.smil (SMIL Example)
otslocal.txt (SMIL Example -- as plain text so you can read it!)

XHTML Information
http://www.w3.org/MarkUp/

Netscape Open Directory and RDF
http://www.dmoz.org
Structural data RDF example, Content data RDF Example

Netscape Navigator 5 Browser -- XUL
http://www.mozilla.org
You can look through the site to find information on how XUL is used (with JavaScript and CSS) to define the layout and functionality of the User Interface.