anchor.diff:  you to associate a service with an externally-reachable hostname.
   This edge hostname is then used to route traffic to the service.
   
  -.An Route with a specified host:
  +.A Route with a specified host:
   ====
   
   [source,yaml]
  
positive.code: ====
  
  
  .An Route without a host:
  ====
  
  [source,yaml]
  
negative.code:   subdomain: v3.openshift.test
  ----
  
  ====
  
  With the OpenShift master node(s) running the above configuration, the
  generated hostname for our example of a host added to a namespace
  