2.1.684 Part 1 Section 19.444, smil:endsync
a. The standard defines the attribute smil:endsync
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This attribute is not supported in PowerPoint 2013, PowerPoint 2016, or PowerPoint 2019.
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a. The standard defines the attribute smil:endsync
This attribute is not supported in PowerPoint 2013, PowerPoint 2016, or PowerPoint 2019.