How to hilight all unhilighted areas

[destinedjagold]

Hello and good day.

Is there like a way for me to highlight every area with a click of a button? I'm trying to create a map where the location names are covered by maphilight and will be revealed once the user clicks on them.

Now, there's a reset button, and I want it to highlight the revealed areas once again, but I can't really figure out how to do so.