# ISO/IEC 29500-3:2008 — Withdrawn and superseded ISO standards

For ISO/IEC 29500-3:2008, item title is Information technology — Document description and processing languages — Office Open XML File Formats — Part 3: Markup Compatibility and Extensibility; status code is 9599; successor is ISO/IEC 29500-3:2011; withdrawn / published date is 2008-11-17, recorded from its source on 2026-08-05.

- **Identifier:** ISO/IEC 29500-3:2008 _(verified: appears in the quote below)_
- **Item title:** Information technology — Document description and processing languages — Office Open XML File Formats — Part 3: Markup Compatibility and Extensibility _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO/IEC 29500-3:2011
- **Withdrawn / published date:** 2008-11-17 _(verified: appears in the quote below)_

## What the source says

> 51461,IS,,ISO/IEC 29500-3:2008,Information technology — Document description and processing languages — Office Open XML File Formats — Part 3: Markup Compatibility and Extensibility,Technologies de l'information — Description des documents et langages de traitement — Formats de fichier 'Office Open XML' — Partie 3: Compatibilité et extensibilité du balisage,2008-11-17,1,"['35.240.30','35.060']",ISO/IEC JTC 1/SC 34,9599,,[59577],['en'],40,<p>ISO/IEC 29500-3:2008 defines a general-purpose mechanism to extend an XML vocabulary.</p>

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).