anchor.diff:      },
       res -> {
           if (result.succeeded()) {
  -            System.out.println(String.format("Does %s rhyme with gravy? %b"), word, res.result()); // <3>
  +            System.out.println(String.format("Does %s rhyme with gravy? %b"), 
  +            	word, 
  +                res.result()); // <3>
           }
       }
   } );
  
positive.code: vertx.eventBus().send("com.rhymewithgravy.com.doesit", // <1>
      "apples", // <2>
      reply -> {
          System.out.println("Does apples rhyme with gravy? " + reply.result().body()); // <3>
      }
  );
  ----
  
negative.code: :apiman: http://www.apiman.io
  :wiki-context-switching: https://en.wikipedia.org/wiki/Context_switch#Cost
  :quasar: http://www.paralleluniverse.co/quasar/
  :tweet: https://twitter.com/jetdrone/status/787532093186306049
  :toc: macro
  :toc-title: Sections
  
  