Activity modeling emphasizes the inputs and outputs, sequence, and conditions for coordinating other behaviors, instead of who owns those behaviors. When you create an activity, automatically you create an activity diagram.
Rational Rhapsody for C++ then adds both a new activity and, under the activity in the browser, a new activity diagram to the model. It also opens the blank diagram in the drawing area. You can change the default activity name, but not the diagram name. It is useful to immediately show the activity frame using the Show/Hide Activity Frame option. You can access the Show/Hide Activity Frame option by right-clicking on the newly created activity diagram.
Activities specify the following information: