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Concept

A Robustness Diagram is basically a simplified UML communication/collaboration diagram which uses the graphical symbols depicted below.
The elements of the Component diagram are available in the tool bar:

                         New actor. This is the same concept as actors in a UML use case diagram.

                          New Boundary. This represents software elements such as screens, reports, HTML pages, or system interfaces that actors interact with.  Also called interface elements.

                          New controller. This serves as the glue between boundary elements and entity elements, implementing the logic required to manage the various elements and their interactions.


                          New entity. These are entity types that are typically found in your conceptual model.

                          Association

                           New use case. Use cases can invoke other use cases you need to be able to depict this on your robustness diagrams.

                          Indication