2.1.383 Part 1 Section 16.22, svg:font-face-src
a. The standard defines the element <svg:font-face-src>, contained within the parent element <style:font-face>
-
This element is not supported in Word 2013, Word 2016, or Word 2019.
b. The standard defines the element <svg:font-face-src>, contained within the parent element <style:font-face>
-
This element is not supported in Excel 2013, Excel 2016, or Excel 2019.