anchor.diff:        | ONE
         | OPENFLOW
         | PLAT
  +      | PLATFORM
         | POLICY_MAP
         | POWEROFF
  +      | PRIORITY_FLOW_CONTROL
         | PROTOCOL
         | PSEUDOWIRE_CLASS
         | PTP
  
positive.code:          | IDLE
           | IDLE_TIMEOUT
           | IMPORT
           | INSERVICE
           | INSPECT
           | INSTANCE
  
negative.code:          | DS0_GROUP
           | DOMAIN_NAME
           | ECHO
           | EGRESS
           | ENCAPSULATION
           | ENCRYPTION
           | END_CLASS_MAP
  