anchor.diff:  To reduce the creation of the file handles, chronicle queue cashes them lazily and when it comes to writing data to the queue files, care-full consideration must be taken when closing the files, because on most OS’s a close of the file, will force any data that has been appended to the file, to be flushed to disk, and if we are not careful this could stall your application.
   
   '''
  -===== *Pretoucher and its configuration*
  +==== Pretoucher and its configuration
   
   `Pretoucher` is a class designed to be called from a long-lived thread. The purpose of the Pretoucher
   is to accelerate writing in a queue. Upon invocation of the `execute()` method, this object will pre-touch
  
positive.code: ----
  
  '''
  ===== *Reading from a queue using a tailer*
  
  Reading the queue follows the same pattern as writing, except there is a possibility there is not a message when you attempt to read it.
  
  
negative.code: ----
  
  '''
  ==== 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.
  