Canopies for each cardinal-elector were once used during conclaves—a sign of equal dignity. After the new Pope accepts his election, he would give his new name; at this time, the other Cardinals would tug on a rope attached to their seats to lower their canopies. Until reforms instituted by Saint Pius X, the canopies were of different colours to designate which Cardinals had been appointed by which Pope. Paul VI abolished the canopies altogether, since, under his papacy, the population of the College of Cardinals had increased so much to the point that they would need to be seated in rows of two against the walls, making the canopies obstruct the view of the cardinals in the back row. In the wake of a conclave taking place to preserve the integrity of the marble floor on the Sistine Chapel, carpenters install a slightly elevated wooden floor alongside a wooden ramp in the entrance for those Cardinals who for one reason or another need to be transported in a wheelchair.