+ else if (at == CTAT_LAYERROW)
+ n_drop = a == PIVOT_AXIS_ROW && t->label_axis[PIVOT_AXIS_ROW] == PIVOT_AXIS_COLUMN;
+ else if (at == CTAT_LAYERCOL)
+ n_drop = a == PIVOT_AXIS_COLUMN && t->label_axis[PIVOT_AXIS_COLUMN] == PIVOT_AXIS_ROW;
+ else if (at == CTAT_SUBTABLE)
+ n_drop = a != PIVOT_AXIS_LAYER;
+ else if (at == CTAT_ROW)