The release notes for version 73 of the Skype Electron scripts includes this new feature:
"Speech and Braille indicate chat history dividers like "Today" and "Yesterday" as they are jumped over during history navigation with arrows. This material is spoken in a lower voice to distinguish it from the newly selected history entry."
Can someone let me know how to access this information? Using the arrow keys doesn't seem to cause the announcements, but I think the note references this, so I'm stuck as to how it's supposed to work.
Using Jaws 2019 on Windows 10, in case that info helps.