An array of steerable ion engines hanging below the station (ie on the edge not in the center) can provide both reboots / stationkeeping and precess the axis, eg once per year to track the Sun.
Because trig, by "mixing" both maneuvers together it uses less propellant vs doing the two maneuvers separately.
Because trig, by "mixing" both maneuvers together it uses less propellant vs doing the two maneuvers separately.