1. A computer-implemented method of a scenario execution environment having a plurality of action layers, comprising: parsing scenario execution environment code specifying at least one scenario execution environment action; identifying at least one of the plurality of action layers associated with said at least one scenario execution environment action specified by the scenario execution environment code; and dispatching said at least one scenario execution environment action to said at least one of the plurality of action layers identified as being associated with said at least one scenario execution environment action.