Credits

Images from chart page come from the LibreOffice Core.

Some definitions come from the Office Open XML.

References

OpenXML

Known as "ISO/IEC 29500, Third edition, 2012-09-01"

ISO :

• Part 1: Fundamentals and Markup Language Reference
• Part 2: Open Packaging Conventions
• Part 3: Markup Compatibility and Extensibility
• Part 4: Transitional Migration Features

MSDN :

• Open XML SDK 2.5 with Validator
• DocumentFormat.OpenXml.Wordprocessing Namespace on MSDN

Library of Congress :

• OOXML Format Family -- ISO/IEC 29500 and ECMA 376
• Schemas in W3C XML Schema language and in RELAX NG for the Strict variant of PPTX, etc.

OpenDocument

• Oasis OpenDocument Standard Version 1.2
• Schema Central Open Document 1.1

Rich Text Format

• Rich Text Format (RTF) Specification, version 1.9.1

Word 97