anchor.diff:  
   The `bin/solr auth enable` command makes several changes to enable Basic Authentication:
   
  -* Creates a `security.json` file and, if using SolrCloud, uploads it to ZooKeeper. The `security.json` file will look similar to:
  +* Creates a `security.json` file and uploads it to ZooKeeper. The `security.json` file will look similar to:
   +
   [source,json]
   ----
  
positive.code: `-updateIncludeFileOnly`::
  When *true*, only the settings in `bin/solr.in.sh` or `bin\solr.in.cmd` will be updated, and `security.json` will not be created.
  
  // TODO 6.6 clarify when this is required
  `-z`::
  Defines the ZooKeeper connect string.
  
  `-d`::
  Defines the Solr server directory, by default `$SOLR_HOME/server`. It is not common to need to override the default.
  
  `-s`::
  Defines the location of `solr.solr.home`, which by default is `server/solr`. If you have multiple instances of Solr on the same host, you likely need to define this.
  
  === Disabling Basic Authentication
  
  
negative.code: 
  The `bin/solr` script allows enabling or disabling Basic Authentication, allowing you to configure authentication from the command line.
  
  Currently, this script only enables Basic Authentication, and is only available when using SolrCloud mode.
  
  === Enabling Basic Authentication
  
  