They're just left over options from ARMA.

It would be simple if this button just turns the light on which you have in your hand (e.g. M4 in hand and the flashlight of it will turn on same with pistol or normal flashlight)

did you know that you can combine map parts to a big map?? and when you have a complete map it should be possible like in mod version

I mean why the hell is there an option for it when its not useable!?!?!

It doesn't work that way any more because of the ability to have multiple different lights (headtorch and flashlight / weapon light) and multiple map segments at the same time.

@R834: Yes I know how to use it, but you can set a button for "flashlight" and "map" in the control settings, so you have to be able to use it that way.

Maps have to be opened by holding them in your hands, and lights turned on by right clicking them in the inventory.