Fog of War?
 

How do I enable the fog of war so I can see the places on the map that I have and have not explored?

I've tried changing the transparency but it doesn't seem to do anything.

(Image with steps to "Show Unexplored Areas" with Carbonite)

awesome thanks. guess i should've looked harder.

You're quite welcome. Even though it's located conveniently where it is now, I've always wondered why it's not included in the Carbonite main 'Options' somewhere under "Maps" (even if that would be redundant). The Maps dialog is the first place I think of when trying to do something with them. heh heh. Glad I could help.