U Motion

In a Mass celebrated ad orientum in either rite, to move to or from a side of the Altar to the other side or to the center of the foot of the Altar. This is done without ascending the Altar steps. So called because the path taken from one side to the other forms a U shape.

If the path crosses the center of the Altar, the Server should stop to Reverence in the middle. Profound Bow if the Eucharist is reposed (as is typical at the High Altar), Moderate Bow if not (as is typical at the Rosary Altar).