Architecting and designing > UML 2.0 Lite > UML models > UML component diagram > Package
  
Package
A package is a grouping of items. For modeling components, a package is used to represent a logical grouping of components.
The package in itself does not generally contain much information; it acts as a packaging unit which contains components representing a logical partitioning of the code. You can attach a child Component diagram to the package to model the components belonging to the package.
See also
UML component diagram