World Builder - Is there a way to hide all with the visibility tool?

[Bodhisattva9001]

I'm making a map and did "Reveal All" for one of the civs with the Visibility tool to get some screenshots. Didn't realize that it effected the actual game, so I didn't undo it and ended up saving.

Is there any way to "hide all"? The map is wayyy too big to do it manually one grid at a time.

Any help appreciated, thanks!