anchor.diff:      }
     }
   }
  ---------------------------------------------------
  -// TEST[continued]
  +----
   
   Similarly, you could use and update script to add a tag to the list of tags
   (this is just a list, so the tag is added even it exists):
   
   [source,console]
  ---------------------------------------------------
  +----
   POST test/_update/1
   {
     "script": {
  
positive.code: script just removes one occurrence.
  
  [source,console]
  --------------------------------------------------
  POST test/_update/1
  {
    "script": {
  
negative.code: `script` is executed:
  
  [source,console]
  ----
  POST test/_update/1
  {
    "script": {
  