The Object Animator add-in provides a graphical animation tool for the verification and validation of Sequence Diagrams. The Object Animator Help system describes its features and usage.

One of the features of this add-in is the use of user defined icons to represent the objects specified on the sequence diagram. To illustrate this feature the Filling Station model is supplied with a set of user defined icons already associated with some of the model items within the Requirements package. Opening one of the sequence diagrams within this package, and then running the Object Animator will result in these icons being used instead of the default icons.