Different Alt views for main window and maps

[Dave64738]

Could you implement a different Alt view for the main game window and the map screens? I like Alt view on for the main window, but off for the map view because the pollution cloud makes everything difficult to see. So when switching between game and map I also have to switch Alt on and off every time. If each view could remember its own Alt setting instead of referring to a single global setting then this would streamline gameplay.