Bridging pattern

http://wiki.c2.com/?BridgePattern

https://web.archive.org/web/20160317135644/http://delphipatterns.blog.com/2011/02/22/bridge/

https://web.archive.org/web/20110604051641/http://home.earthlink.net/~huston2/dp/bridge.html "....The Bridge pattern decouples an abstraction from its implementation, so that the two can vary independently. A household switch controlling lights, ceiling fans, etc. is an example of the Bridge. The purpose of the switch is to turn a device on or off. The actual switch can be implemented as a pull chain, simple two position switch, or a variety of dimmer switches. [Michael Duell, "Non-software examples of software design patterns", Object Magazine, Jul 97, p54]...."

https://web.archive.org/web/20071026035244/http://wiki.cs.uiuc.edu/PatternStories/BridgePattern

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Design patterns