anchor.diff:  
   Not yet in scope:
   
  +* Order needs to link to DocumentSet
   * approvals workflow (perhaps: tasks/actors/orgunits/employees)
  
positive.code: 
  abstract class Order #lightgreen {
  }
  
  class PurchaseOrder #lightgreen extends Order {
  }
  
negative.code: 
  
  ''''''''''''''''''''''''''''''''''''''''''''''
  class DocumentSet #lightgreen {
  }
  
  class DocumentHandle #lightgreen {
  
  }
  
  enum HandleType #cyan {
  