This mod is just a bit of a helper mod to make pulling items off a main bus a little bit easier.
If you place an output belt facing away from your main bus and select it, a gui element will appear in the left which can be used to select which item to pull off the main bus. Once you choose an item it will work backwards until it finds a bus belt with that item, at which point it will pull that bus belt all the way up to your output belt, automatically placing splitters and underneathies to do so.