Ice dance, a discipline of figure skating, has required elements that make up a well-balanced rhythm dance program and free dance program, which must be performed during competitions. They include: the dance lift, the dance spin, the step sequence, turn sequences (which include twizzles and one-foot turns sequences), and choreographic elements. The elements must be performed in specific ways, as described by published communications by the International Skating Union (ISU), unless otherwise specified. The ISU has also provided a list of illegal movements.