2.1.346 Part 1 Section 14.5 (MathML 2.0 Section 3.5.3), Labeled Row in Table or Matrix (mlabeledtr)

a.   The standard defines the element <mlabeledtr>

This element is supported in MathML in Word 2013 and MathML in Word 2016.

On load, MathML in Word converts <mlabeldtr> elements into <mtr> elements.

This element is supported in OfficeArt Math in Word 2013 and OfficeArt Math in Word 2016.

On load, OfficeArt Math in Word reads the <mlabeledtr> element. The label argument is ignored, making an <mlabeledtr> element equivalent to an <mtr> element.

On save, OfficeArt Math in Word does not write the <mlabeledtr> element.

b.   The standard defines the element <mlabeledtr>

This element is supported in Excel 2013, Excel 2016, and Excel 2019.

On load, Excel reads the <mlabeledtr> element. The label argument is ignored, making an <mlabeledtr> element equivalent to an <mtr> element.

On save, Excel does not write the <mlabeledtr> element.

c.   The standard defines the element <mlabeledtr>

This element is supported in PowerPoint 2013, PowerPoint 2016, and PowerPoint 2019.

On load, PowerPoint reads the <mlabeledtr> element. The label argument is ignored, making an <mlabeledtr> element equivalent to an <mtr> element.

On save, PowerPoint does not write the <mlabeledtr> element.