You can also try using a Beacon to control where and how far a bot can do it's thing. So you can program them in one place and, by simply moving the beacon, the bots will move to the new location.
I like using the beacons. I bet some people might say that they want the maximum range to be larger. I think instead that the minimum range should be smaller (maybe just 1 or 2 grids wide) so that we could have more control when we tell them to "Find" something near the beacon.
You can adjust the range that beacons cover (maybe not just 1 or 2 blocks away, but definitely a much smaller radius) by pressing the "Z" key when holding the beacon. This also allows you to name the beacon, but the range adjustment is also there too and you can make it quite small.
