|  Autodesk.  | 
 Classes
 Classes  | Class | Description | |
|---|---|---|
|   | Application | The Application Creation object is used to create new instances of utility objects. | 
|   | AreaCreationData | A class which wraps the arguments of Area for batch creation | 
|   | Document | The Document Creation object is used to create new instances of elements within the Autodesk Revit project. | 
|   | FamilyInstanceCreationData | A class which wraps the arguments of FamilyInstance for batch creation. | 
|   | FamilyItemFactory | The Family Item Factory object is used to create new instances of elements within the Autodesk Revit Family. | 
|   | ItemFactoryBase | The ItemFactoryBase object is used to create new instances of elements within the Autodesk Revit document. | 
 Enumerations
 Enumerations  | Enumeration | Description | |
|---|---|---|
|   | eRefFace | Indicates the reference face. The Opening will be created at the direction perpendicular to the reference face. |