3 links
Vector Markup Language (VML) Submission to W3C
3.org
Vector Markup Language (VML) World Wide Web Consortium Note 13-May-1998 - Submission to the World Wide Web Consortium.
VML Provides XML-based Graphics for the Web
microsoft.com
Introductory article from MSDN: Vector Markup Language, new to Internet Explorer 5.0, lets the user generate vector-based images on the fly using some simple XML.