anchor.diff:        #[b typings.json] provides additional definition files for libraries that the TypeScript
         compiler doesn't natively recognize.
       li.
  -      #[b systemjs.config.js] provides instructions for loading application and library modules.
  -      (We use SystemJS here, but you could also use webpack for the same purpose.)
  -
  -  p.
  -    Learn more about all these configuration files in the
  -    #[a(href="guide/npm-packages.html") Npm Package Configuration] guide, the
  -    #[a(href="#{_tsconfigUri}") TypeScript Configuration] guide, and in the
  -    #[a(href="#systemjs") SystemJS] section later in this guide.
  +      #[b systemjs.config.js] provides information to a module loader about where to find
  +      application modules, and registers all the necessary packages. It also
  +      contains other packages that will be needed by later documentation examples.
   
     p.
       Create each of these files in your project directory. Populate them by pasting in text from
  
positive.code:     the example box.
  
  .l-main-section
  h2#create-and-configure Step 1: Create and configure the project
  
  - var _package_and_config_files = _docsFor == 'dart' ? 'pubspec.yaml' : 'configuration files'
  
  
negative.code:   * [Create #{_package_and_config_files}](#add-config-files)
    * [#{_Install} packages](#install-packages)
  
  h2 Create the project folder
  :marked
    Using a terminal window, create a directory for the project, and change into this
    directory.
  