anchor.diff:          ]
       ]
   }
  +----
  +
  +You may need to include extra content into the head of the exported document.
  +For example, you might want to include jQuery inside the `<head>` element of the HTML export.
  +To do so, first create a docinfo file `src/asciidoc/docinfo.html` containing the content to include, in this case the `<script>` tag to load jQuery.
  +
  +[source,html]
  +.src/asciidoc/docinfo.html
  +----
  +<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/2.0.3/jquery.js"></script>
  +----
  +
  +Then, add the `docinfo1` attribute to the attributes list in the previous example:
  +
  +[source,groovy]
  +.build.gradle
  +----
  +attributes: [
  +    // ...
  +    docinfo1: '',
  +    // ...
  +]
   ----
   
   Refer to the {asciidoctor-docs}[Asciidoctor documentation] to learn more about these options and attributes.
  
positive.code: 
  == Installation
  
  Use the following snippet inside a Gradle build file
  
  [source,groovy]
  ----
  buildscript {
      repositories {
  
negative.code: Any key/values set on `attributes` are sent as is to Asciidoctor. You may use this Map to specify an stylesheet for example. The following snippet shows a sample configuration defining attributes
  
  [source,groovy]
  .build.gradle
  ----
  // append below the line: apply plugin: 'asciidoctor'
  
  asciidoctor {
      outputDir = new File("$buildDir/docs")
  