Show item info by hovering cursor over item.
Deselect item only if unload actually happened.
Close inventory screen by its hotkey.
Zoom globe by mousewheel anywhere on screen (except for left menu).
Render alternative hi-res geoscape background image if base resolution
is higher than default. Provided bg image is fit for base res of 540x270
(which is perfect for display resolutions with AR 16:9).
Close screens by their hotkeys.
Compiler settings.