anchor.diff:  
   The following command will run benchmark against Node.js:
   
  - $ npm run benchmark node
  + $ npm run benchmark node --prefix packages/core
   
  -Once `build/benchmark` is initialized, you can run benchmark again (without building the project):
  +Once `packages/core/build/benchmark` is initialized, you can run benchmark again (without building the project):
   
  - $ node build/benchmark/node.js
  + $ node packages/core/build/benchmark/node.js
   
   == Debugging
   
  
positive.code: 
  To build the examples, simply run the npm `examples` task from the root of the project:
  
   $ npm run examples
  
  This command produces 3 examples in the [path]_build/examples_ directory:
  
  * `asciidoctor_example.html` and `userguide_test.html` demonstrate how a Ruby script can be compiled to JavaScript using the Opal Compiler and displayed within the browser as a normal HTML file.
  Both Ruby scripts `asciidoctor_example.rb` and `userguide_test.rb` include:
  ** a string that contains an AsciiDoc source document
  ** a call to the Asciidoctor API to render the content of that string to HTML
  ** an event listener that inserts the generated HTML into the page
  * `slide.html` demonstrates how to convert an AsciiDoc content to a Reveal.js presentation using the Asciidoctor Reveal.js backend templates
  
  In order to visualize the result, a local http server must be started within the root of this project otherwise you will have a cross origin issue which prevents to load some resources and render the HTML.
  For this purpose, you can run the following command to start a HTTP server locally: `npm run server`
  
  Once the server is listening, you can point your browser at:
  
  
negative.code: 
   $ git clone https://github.com/asciidoctor/asciidoctor.js.git
  
  Next, run npm's `install` command:
  
   $ npm i
   $ npm i --prefix packages/core
  
  You're now ready to build Asciidoctor.js.
  
  TIP: Opal.js, the Ruby runtime in JavaScript is available in `packages/core/node_modules/asciidoctor-opal-runtime/src/opal.js`
  
  == Building
  
  