2.1.1259 Part 1 Section 20.354, style:text-align-source
a. The standard defines the attribute style:text-align-source, contained within the element <style:table-cell-properties>
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This attribute is not supported in Word 2013, Word 2016, or Word 2019.
b. The standard defines the attribute style:text-align-source, contained within the element <style:table-cell-properties>
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This attribute is not supported in Excel 2013, Excel 2016, or Excel 2019.
c. The standard defines the attribute style:text-align-source, contained within the element <style:table-cell-properties>