Go to "Last seen slide" and "[chronologically] previous slide"

Greetings,

I would like to suggest a split trigger for the Back button, as right now, "Go to previous slide" brings you back to the "last slide you were on". By comparison, "Go to Next slide" follows the project's chronology.

"Go to Last seen slide" could be useful for pop-up slides.

"Go to previous slide" would follow the project's chronology.

Thanks in advance :)