2.1.1323 Part 3 Section 4.8.14, manifest:version

a.   The standard defines the attribute manifest:version, contained within the element <manifest:manifest>

This attribute is not supported in Microsoft Word 2013, Microsoft Word 2016, or Microsoft Word 2019.

b.   The standard defines the attribute manifest:version, contained within the element <manifest:manifest>

This attribute is not supported in Microsoft Excel 2013, Microsoft Excel 2016, or Microsoft Excel 2019.

c.   The standard defines the attribute manifest:version, contained within the element <manifest:manifest>

This attribute is not supported in Microsoft PowerPoint 2013, Microsoft PowerPoint 2016, or Microsoft PowerPoint 2019.