Generate Interaction Description Document. This document consists of each interaction by name with a brief description of each one. Document each object class behavior in a state net or equivalent. Generate specifications based on completed OSA diagrams from the analysis. Determine appropriate levels of abstraction of object classes and relationship sets.
Abstraction levels resulting from the analysis can be both too high and too low.
Modify OSA diagrams and Object Description Document as required. Add implementation dependent information. Implementation language restrictions. Possible code reuse. Possible use of existing software.