2.1.153 Part 1 Section 8.1.8, text:alphabetical-index-mark-start
a. The standard defines the element <text:alphabetical-index-mark-start>
-
This element is supported in Word 2013, Word 2016, and Word 2019.
-
On load, Word collapses the range encapsulated by a <text:alphabetical-index-mark-start> element and <text:alphabetical-index-mark-end> element to a single <text:alphabetical-index-mark> element.
b. The standard defines the element <text:alphabetical-index-mark-start>
-
This element is not supported in PowerPoint 2013, PowerPoint 2016, or PowerPoint 2019.