┌─────┐                             
                             │Alice│                             
                             └──┬──┘                             
                                │ ────┐                          
                                │     │ 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""           
                                │                                
                             ┌──┴──┐                             
                             │Alice│                             
                             └─────┘