Keep an eye on different parts of the map in small windows (viewports), without obstructing the rest of the game.
Providing the player with new tools or adjusting the game interface, without fundamentally changing gameplay.
Play it your way.
Viewport is the word you are looking for.
You are absolutely correct, I was struggling to find a concise word to describe it. But it's too late to change all the wording associated with the mod now. I've added the keyword to the mod description to make the mod searchable by it.
