You are old and play in such a resolution the minimap covers all the space? You avoid attacking north eastern nests hidden behind the minimap? No more! With a simple click you can now set the minimap on and off. One click, the minimap is there, one more click and boom! It is gone. Feel the power, ascend to the exosphere, use Minimap Toggle where the most advanced users can even set a hotkey for the toggling.

Seriously ... It's just a button to show and hide the minimap.