anchor.diff:  <6> Include the `lte` clause only if `line_no.end` is specified
   <7> Fill in the value of param `line_no.end`
   
  +[NOTE]
  +==================================
   As written above, this template is not valid JSON because it includes the
  -_section_ markers like `{{#line_no}}`.  For this reason, the template
  -can only be written as a string.
  -
  -[float]
  +_section_ markers like `{{#line_no}}`.  For this reason, the template should
  +either be stored in a file (see <<pre-registered-templates>>) or, when used 
  +via the REST API, should be written as a string:
  +
  +[source,json]
  +--------------------
  +"template": "{\"query\":{\"filtered\":{\"query\":{\"match\":{\"line\":\"{{text}}\"}},\"filter\":{{{#line_no}}\"range\":{\"line_no\":{{{#start}}\"gte\":\"{{start}}\"{{#end}},{{/end}}{{/start}}{{#end}}\"lte\":\"{{end}}\"{{/end}}}}{{/line_no}}}}}}"
  +--------------------
  +
  +==================================
  +
  +[float]
  +[[pre-registered-templates]]
   ===== Pre-registered template
   
   You can register search templates by storing it in the `config/scripts` directory, in a file using the `.mustache` extension.
  
positive.code:         {{/line_no}} <2>
        }
      }
  }
  ------------------------------------------
  <1> Fill in the value of param `text`
  
negative.code: [source,js]
  ------------------------------------------
  {
    "query": {
      "filtered": {
        "query": {
          "match": {
  