Abstract: A scenario presentation tool or system provides for the definition, maintenance, and presentation of scenarios. The scenarios comprise a series of steps representing the dynamic behavior of a system. The tool utilizes a system description and includes arrangements for reading and presenting the system description and an arrangement for selecting elements from the system description and for facilitating the definition, maintenance, and presentation of scenarios. The method comprises the steps of defining a sequence of steps by selecting elements from the system description in accordance with a predetermined syntax and saving the steps with sufficient information to reproduce the scenarios.

Abstract: A scenario based method is disclosed for updating an object oriented system model, which is implemented on a computer including memory. The method includes loading a partial system model into the memory. Loading a plurality of scenarios into the memory which defines the desired behavior to be added to the model. Then saving the plurality of scenarios. Producing a difference summary including the differences between the system model and the plurality of scenarios, which enables a user to select an update set of scenarios. Updating the model by extracting class, method and state transition information from said update set of scenarios.