Design Pattern: identify a popular design strategy and document the domain-independent leverage. Adapter: use an extra level of indirection to make 2 incompatible objects compatible. GoF Design Patterns Table of Intents Table of Mnemonics (1 column) Table of Mnemonics (3 column) UML diagrams of all 23 GoF design class diagrams quiz Non-Software Examples article Who ya gonna call? Creational patter