Applications of XML

A few examples:

XHTML (www.w3.org/TR/xhtml1)

W3C's XMLization of HTML 4.0. Example XHTML document:

<?xml version="1.0" encoding="UTF-8"?> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head><title>Hello world!</title></head> <body><p>foobar</p></body> </html>

CML (www.xml-cml.org)

Chemical Markup Language. Example CML document snippet:

<molecule id="METHANOL"> <atomArray> <stringArray builtin="elementType">C O H H H H</stringArray> <floatArray builtin="x3" units="pm">-0.748 0.558 -1.293 -1.263 -0.699 0.716</floatArray> </atomArray> </molecule>

  <molecule id="METHANOL">
    <atomArray>
      <stringArray builtin="elementType">C O H H H H</stringArray>
      <floatArray builtin="x3" units="pm">-0.748 0.558 -1.293 -1.263 -0.699 0.716</floatArray>
    </atomArray>
  </molecule>

OMF

Weather Observation Markup Format - for weather observation reports.

XPML

Extensible Phone Markup Language - for interactive voice applications.

[www.oasis-open.org/cover/xml.html#applications contains a huge list of serious XML applications]