Change. A uniform way to be notified of changes to the state of the primary object.

Actions. Commands the end-user may execute, usually shown on a toolbar or menu.

Properties and Property. Information, often editable, about the primary object; usually shown in a property sheet, and used to display the object as an icon.

Prototype. Behavior that allows an end-user to create a clone of the primary object.

DnTargetContainer and DnDTarget. Behavior used to implement responses to DND operations.

Folder and Column. Representation of the primary object as a collection, and columns of information permitting a tabular view of the items in the collection.

ViewPrototypes. Presents a list of View objects which can be cloned (via their Prototype Facets) to construct new views on the original primary object.