Cycles the focus through all the messages sections on the page starting from the most recent one.
Then finally, moves the focus back to the last focused element outside the messages region.
Esc
Moves focus back to the last focused element outside the messages region and closes the current message if it is closable.
Enter or Space
Activates the currently focused element in the message.
Focus outside Messages
F6
Move focus to the first message within the more recently disclosed messages region.