2.1.1006 Part 1 Section 20.68, dr3d:back-scale
a. The standard defines the attribute dr3d:back-scale, contained within the element <style:graphic-properties>
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This attribute is not supported in Word 2013, Word 2016, or Word 2019.
b. The standard defines the attribute dr3d:back-scale, contained within the element <style:graphic-properties>
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This attribute is not supported in Excel 2013, Excel 2016, or Excel 2019.
c. The standard defines the attribute dr3d:back-scale, contained within the element <style:graphic-properties>
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This attribute is not supported in PowerPoint 2013, PowerPoint 2016, or PowerPoint 2019.