outcoming
                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                                     
                                                      read data                                                                                                                                                                                                                      
                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                               Warning                                               
                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                                     
                          generate diagrams                                                                                                                                                                                                                                          
                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                                     
                                                                                                                                                                                                                                                                                     
                                                      more data?                                                                                                  yes                                                                                                       incoming