anchor.diff:  
   [width="50%", halign="center", align="center"]
   |===========
  -| *Actors* +
  +n| *Actors* +
   Usage patterns
  -| *Application* +
  +r| *Application* +
   Locks, External systems
  -| *Java VM* +
  +g| *Java VM* +
   Memory, Process
  -| *OS (Hardware)* +
  +b| *OS (Hardware)* +
   CPU, Memory, Disk IO, Network, Locks
   |===========
   
  
positive.code: | {nbsp}
  | {nbsp}
  | {nbsp}
  | OS (Hardware)
  |===========
  
  Role:: Manages access to hardware via:
  
negative.code: [width="{pdm-width}", halign="center", float="right"]
  |===========
  | {nbsp}
  r| Application
  | Java VM
  | OS (Hardware)
  |===========
  