# Welcome to the Microsoft Office Visio 2003 XML Schema Reference

Welcome to the Microsoft® Office Visio® 2003 XML Schema Reference. This reference contains conceptual overviews, programming tasks, samples, and references to guide you in developing solutions based on the Visio XML Schema Reference.

Publish date of this reference: October 2004 (version 2003)

This documentation includes information about the following:

- DatadiagramML schema

  A full view of the DatadiagramML schema structure. You can click any element to go directly to its reference topic.

- A DatadiagramML overview

  An overview of DatadiagramML that includes information about the DatadiagramML schema, inheritance, working with sheets and formulas, working with geometry, working with text, loading XML files created outside of Visio, round-tripping XML data, embedding custom XML data, units of measure, and errors and warning messages.

  Note In previously published materials, including the Microsoft Office Visio 2003 SDK, the XML schema that is explained in this document was referred to as "XML for Visio." From now on, the schema will be known as DatadiagramML.

  Note The examples in the overview topics for this reference show values for attributes in single quotation marks (') because Visio writes out this data by using single quotation marks. You can, however, enter attribute values in DatadiagramML files by using either double or single quotation marks. The examples provided in the reference topics show values for attributes in double quotation marks (").

- DatadiagramML element reference

  Reference topics that provide details on all of the elements in the DatadiagramML schema. Each topic includes information on syntax, default units for elements that represent cells, attributes, and parent and child elements.

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