,-----------------------------.  
  |==User                       |  
  |-----------------------------|  
  |                             |  
  |A user of my software system.|  
  |                             |  
  `-----------------------------'  
                 |                 
                 |                 
,---------------------------------.
|==Software System                |
|---------------------------------|
|                                 |
|My software system.              |
|                                 |
`---------------------------------'