Command (Encapsulated request object) [Behavioral]

Description

The Command Pattern allows you to decouple the requester of an action from the object that acts.

MacroCommands

MacroCommands are a simple extension of the Command Pattern that allows multiple commands to be invoked. Likewise, MacroCommands can easily support undo().

Transactional systems

Command patterns may also be used to implement logging and transactional systems.