2.1.316 Part 1 Section 14.2, office:annotation-end
a. The standard defines the element <office:annotation-end>
-
This element is supported in Word 2013, Word 2016, and Word 2019.
-
On load, annotations are dropped from headers, footers, footnotes, endnotes, and textboxes.
-
On save, annotations are dropped from equations.