anchor.diff:  // CONSOLE
   // TEST[continued]
   
  -We can add a tag to the list of tags (note, if the tag exists, it
  -will still add it, since it's a list):
  +We can add a tag to the list of tags (if the tag exists, it
  + still gets added, since this is a list):
   
   [source,js]
   --------------------------------------------------
  
positive.code: --------------------------------------------------
  // TESTRESPONSE
  
  You can disable this behavior by setting "detect_noop": false like this:
  
  [source,js]
  --------------------------------------------------
  
negative.code: // TEST[continued]
  
  In addition to `_source`, the following variables are available through
  the `ctx` map: `_index`, `_type`, `_id`, `_version`, `_routing`,
  and `_now` (the current timestamp).
  
  We can also add a new field to the document:
  