While playing a single player game I noticed that some of my units would automatically fire when an enemy came into range, but I don't understand the rules behind this. Is this part of moving in "hunter" mode?

thanks

Does anyone know the ranges for weapons in this game? How far can rifles shoot with any accuracy?

thanks

I am learning how to use the editor but one thing eludes me, how do I delete something I put on the map (such as a bunker)?