Here we show how elements owned by another element (such as a Model or a Package) can be visually contained within and logically grouped using "wrapper" Components.

NB: this powerful technique does NOT leverage the semantics of the UML2 Component,  it exploits merely mechanical features of the Component element and its rectangular symbol. Hopefully in the future UML will provide a semantically neutral element for this purpose. The technique is also specifically tuned to the MagicDraw UML tool.