As shown on Aztec codices, court markers were also used on many ballcourts to establish the dividing line between teams – one set into the playing alley floor at exact mid-court, the other two placed against each side wall. However, such placement is not universal. Two ancient ceramic ballcourt models recovered from western Mexico show the three markers placed "length-wise" along the court: one (again) at exact mid-court with the remaining pair set midway between the walls at either end of the playing alley. The ballcourt markers at Copan are also arranged in this manner. The ballcourt at Monte Alban, meanwhile, has only one court marker, placed at the exact center of the court.