Beacons help with "Find Nearest …" commands. After you have built your beacon, pick it up and you can then give it a name and a range by pressing Z. The name is only a label and is not used by the Bots. The range is the size of the red circle that limits where the Bots will search for the nearest specific object to the beacon. In the example below, the Steam Bot wearing the Traffic Cone hat will find the nearest unwound Workerbot (to the beacon) and then recharge it. You can tell that it is nearest to the beacon because the "Find Nearest …" command has the blue and red button (indicating the beacon) instead of the question mark (indicating no beacon) as the point to which it must be nearest.
