About XML in Visio

Beginning in Microsoft Visio® 2002, the Extensible Markup Language (XML) is supported as a native file format, making it possible to share your Visio drawings across multiple platforms.

Additionally, the Visio object model provides new properties and methods that make it possible for solution developers to store well-formed, solution-specific XML data within a Visio document.

For more information about working with XML in Visio, see the Microsoft Developer Network (MSDN) Web site.