In NURBS sub-objects, a location in parameter space that is used to resolve ambiguities in some kinds of sub-object creation. The seed value is a location on a parent object, and the location nearest to the seed value that satisfies the creation condition is the one that 3ds Max chooses. For a curve, the seed value is a U location in the curve's parameter space. For a surface, the seed location is a pair of UV coordinates in the surface's parameter space.