anchor.diff:  
   The index root name where to write events to. The default is `packetbeat` and
   generates `[packetbeat-]YYYY.MM.DD` indexes (e.g. `packetbeat-2015.04.26`).
  +
  +The index root name where to write events to. The default is the beat its name.
  +For example `packetbeat` generates `[packetbeat-]YYYY.MM.DD` indexes (e.g. `packetbeat-2015.04.26`).
  +
   
   ===== max_retries
   
  
positive.code: was a pull request some time ago. But that's not documented yet.
  ////
  
  Inserts the transaction in a Redis list. This output plugin is compatibile with
  http://logstash.net/docs/1.4.2/inputs/redis[Redis input plugin] from Logstash,
  so Redis can be used as queue between the Beat shippers and Logstash.
  
  
negative.code: [[configuration-output]]
  === Outputs
  
  Multiple outputs can be configured for exporting the correlated transactions.
  Currently the following output types are supported:
  
  * Elasticsearch
  * Lumberjack (Logstash)
  