Create/Modify Hull Reference Object

This function is used to create or modify the Hull Reference object. Some information about this object and its purpose can be found in Hull, General Hull Concepts, Object Types of Hull, Objects in the Form Databank, Hull Reference. For some additional comments on "composed names" and names of objects in additional surfaces, see Hull, General Hull Concepts, About Naming in Hull, General about Names, Different Principles of Names, Composed Names.