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ISO 16684-2

Extensible metadata platform – Part 2: Description of XMP schemas using RELAX NG

This part of ISO 16684 specifies the use of RELAX NG to describe serialized XMP metadata. This applies to how conforming schemas can use the features of RELAX NG.

For more information, refer to the PDF Association’s Technical Resources.


Technical questions about ISO 16684 are most effectively addressed in the PDF Association’s official pdf-issues GitHub repo.


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ISO Group Responsible: ISO TC171 SC2 WG12

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