'SequenceMessageAlign center'                               
                                                                                           
     ┌───┐                                              ┌─────┐                            
     │Bob│                                              │Alice│                            
     └─┬─┘                                              └──┬──┘                            
       │Long Long Long Long Long Long Long Long Long text. │                               
       │──────────────────────────────────────────────────>│                               
       │                                                   │                               
       │            This is a signal to Alice.             │                               
       │            It also demonstrates                   │                               
       │            multiline                              │                               
       │            text.                                  │                               
       │──────────────────────────────────────────────────>│                               
       │                                                   │                               
       │                                                   │────┐                          
       │                                                   │    │ This is a signal to self.
       │                                                   │<───┘ It also demonstrates     
       │                                                   │      multiline                
       │                                                   │      text.                    
       │                                                   │      -> On right              
       │                                                   │                               
       │                                                   │                               
       │                                                   │────┐                          
       │                                                   │    │ This is a signal to self.
       │                                                   │<───┘ It also demonstrates     
       │                                                   │      multiline                
       │                                                   │      text                     
       │                                                   │      <- On left               
       │                                                   │                               
       │                                                   │                               
       │             This is a signal to Bob.              │                               
       │             It also demonstrates                  │                               
       │             multiline                             │                               
       │             text.                                 │                               
       │<──────────────────────────────────────────────────│                               
     ┌─┴─┐                                              ┌──┴──┐                            
     │Bob│                                              │Alice│                            
     └───┘                                              └─────┘