The document discusses concepts and principles of software design including: 1) Design concepts such as data design, architectural design, interface design, and procedural design which transform analysis models into software structures and components. 2) Design principles such as minimizing intellectual distance from the problem domain, structuring for change and graceful degradation, and assessing quality during creation rather than after. 3) Documentation of a design should include the scope, data design, architectural design, interfaces, and components.