UML activity diagram - Snap in process
"Microsoft Management Console is a component of Windows 2000 and its successors that provides system administrators and advanced users an interface for configuring and monitoring the system.
Snap-ins and consoles.
The management console can host Component Object Model components called snap-ins. Most of Microsoft's administration tools are implemented as MMC snap-ins. Third parties can also implement their own snap-ins using the MMC's application programming interfaces published on the Microsoft Developer Network's web site." [Microsoft Management Console. Wikipedia]
The UML activity diagram example "Snap in process" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Rapid UML solution from the Software Development area of ConceptDraw Solution Park.