CubicSurface is a type of HashTable storing information about a smooth cubic surface in P^3. The keys of a QuadricSurface are: IntersectionPairing, HyperplaneClass, CanonicalClass, Ideal, BlowUpPoints, MapToP3.
Methods that use an object of class CubicSurface :
divisor(List,CubicSurface), see divisor -- creates a Divisor