The concept-oriented design (COD) is an approach to system design based on the principles of the ConceptOriented paradigm. This method is based on the assumption that all components of the system are living in some environement or container with concrete borders. An environment can be included into other environments and include itself [in] many internal environments. The structure of the system containers determines most of its functionality and has to be defined before objects are placed into the system. More information on the concept-oriented design can be found at the concept-oriented portal here http://conceptoriented.com. ---- WalledGarden (of ConceptOriented pages)