anchor.diff:  include _util-fns
  -  
  +
   :marked
     Good tools make application development quicker and easier to maintain than
     if you did everything by hand.
  -  
  +
     The [**Angular CLI**](https://cli.angular.io/) is a **_command line interface_** tool
  -  that can create a project, add files, and perform a variety of ongoing development tasks such 
  +  that can create a project, add files, and perform a variety of ongoing development tasks such
     as testing, bundling, and deployment.
  -  
  -  The goal in this guide is to build and run a simple Angular 
  -  application in TypeScript, using the Angular CLI 
  +
  +  The goal in this guide is to build and run a simple Angular
  +  application in TypeScript, using the Angular CLI
     while adhering to the [Style Guide](./guide/style-guide.html) recommendations that
     benefit _every_ Angular project.
  -  
  +
     By the end of the chapter, you'll have a basic understanding of development with the CLI
     and a foundation for both these documentation samples and for real world applications.
   
     You'll pursue these ends in the following high-level steps:
  -  
  +
     1. [Set up](#devenv) the development environment.
     2. [Create](#create-proj) a new project and skeleton application.
     3. [Serve](#serve) the application.
  
positive.code:     Older versions produce errors, but newer versions are fine.
  :marked
    Then **install the [Angular CLI](https://github.com/angular/angular-cli)** globally.
    
  code-example(language="sh" class="code-shell").
    npm install -g @angular/cli
    
  .l-main-section
  h2#create-project Step 2. Create a new project
  :marked
  
negative.code:     td <code>tsconfig.{app|spec}.json</code>
      td
        :marked
          TypeScript compiler configuration for the Angular app (`tsconfig.app.json`)
          and for the unit tests (`tsconfig.spec.json`).
  
  
  block root-files
    :marked
      ### The root folder
      The `src/` folder is just one of the items inside the project's root folder.
      Other files help you build, test, maintain, document, and deploy the app.
      These files go in the root folder next to `src/`.
  
  .filetree
  