By using the ,return and orbit" macro it navigates the drones to return to the ship and start orbiting.
When the ship now travles to another point the drones stay and behin passive.
This causes to press the return and orbit always in order for example to repair drones in range while traveling or doing other operations while moving the ship.
Specialy in abyssal where u can repair drones the constant orbit would be a usefule thing.
As the macro alrdy descripes ,return and orbit" the orbit should be a constante.