anchor.diff:  }
   ----
   
  -===== *14. File retention*
  +* *14. File retention*
   
   You can add a `StoreFileListener` to notify you when a file is added, or no longer used.
   This can be used to delete files after a period of time.
  
positive.code:         readingDocument().isPresent();
  ....
  
  ===== *6. Restartable tailers*
  
  It can be useful to have a tailer which continues from where it was up to on restart of the application.
  
  
negative.code: $ ./bin/queue_reader.sh <options>
  ----
  
  * *10. Writing into a queue using `ChronicleWriter`*
  
  If using `MethodReader` and `MethodWriter` then you can write single-argument method calls to a queue
  using `net.openhft.chronicle.queue.ChronicleWriterMain` or the shell script `queue_writer.sh` e.g.
  