anchor.diff:  example the following sample shows how to do this with Java DSL and XML
   DSL
   
  -And the sample sample with XML DSL
  +And the sample with XML DSL
   
   [[deadLetterChannel-Samples]]
   == Samples
  
positive.code: === Boundary of original message
  
  The original input means the input message that are bounded by the current unit of work. An unit of work typically spans one route, or multiple routes if they are connected 
  using internal endpoints such as direct or seda. When messages is passed via external
  endpoints such as JMS or HTT then the consumer will create a new unit of work, with the
  message it received as input as the original input. Also some EIP patterns such as splitter,
  multicast, will create a new unit of work boundary for the messages in their sub-route
  
negative.code: redelivery is allowed or not; notice that any in progress redelivery
  will still be executed. This option can only disallow any redelivery to
  be executed *after* the stopping of a route/shutdown of Camel has been
  triggered. If a redelivery is disallowed then a
  `RejectedExecutionException` is set on the xref:latest@manual:ROOT:exchange.adoc[Exchange]
  and the processing of the xref:latest@manual:ROOT:exchange.adoc[Exchange] stops. This means
  any consumer will see the xref:latest@manual:ROOT:exchange.adoc[Exchange] as failed due the
  