yes                                         Graphviz installed?                                                                                                                                                                                                                                        no                                                                                        
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      
                     process all                                                                                                                                                                                       process only                                                                                                                                                                                                                                                   
                     diagrams                                                                                                                                                                                          sequence                                                                            and                                                                  activity                                                                                      diagrams