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  +  ### 다른 도움되는 라이브러리###
  +
     ### Other helper libraries
     
  +  ***angular-in-memory-web-api*** - 실제 서버나 http 호출 없이 원격 서버의 웹 API를 시뮬레이션하는 Angular-지원 라이브러리입니다.
  +  서버가 마련되지 않은 상태에서의 시연이나 예제, 혹은 초기 개발단계에 도움이 됩니다.
  +  자세한 것은 [Http 클라이언트](server-communication.html#appendix-tour-of-heroes-in-memory-server) 페이지를 참고하세요.
  +
     ***angular-in-memory-web-api*** - An Angular-supported library that simulates a remote server's web api 
     without requiring an actual server or real http calls. 
     Good for demos, samples, and early stage development (before we even have a server).
     Read about it in the [Http Client](server-communication.html#appendix-tour-of-heroes-in-memory-server) page.
     
  +  ***bootstrap*** - [Bootstrap](http://getbootstrap.com/)은 반응형 웹 어플리케이션 디자인으로 유명한 HTML/CSS 프레임워크입니다.
  +  몇가지 예제들은 *bootstrap*을 활용해 외관을 꾸몄습니다.
  +
     ***bootstrap*** - [Bootstrap](http://getbootstrap.com/) is a popular HTML and CSS framework for designing responsive web apps.
     Some of the samples improve their appearance with *bootstrap*.
     
  
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    ### Polyfill packages
    
    Angular requires certain [polyfills](https://en.wikipedia.org/wiki/Polyfill) in the application environment.
    Install these polyfills using the npm packages that Angular lists in the *peerDependencies* section of its `package.json`.
    
    You must list these packages in the `dependencies` section of your own `package.json`.
    
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    :marked
      For background on this requirement, see [Why peerDependencies?](#why-peer-dependencies).
  :marked
    ***core-js*** - Patches the global context (window) with essential features of ES2015 (ES6).
     You may substitute an alternative polyfill that provides the same core APIs. 
     When these APIs are implemented by the major browsers, this dependency will become unnecessary.
    
    ***rxjs*** - A polyfill for the [Observables specification](https://github.com/zenparsing/es-observable) currently before the 
    [TC39](http://www.ecma-international.org/memento/TC39.htm) committee that determines standards for the JavaScript language.
    You can pick a preferred version of *rxjs* (within a compatible version range) 
    without waiting for Angular updates.
    
    ***zone.js*** - A polyfill for the [Zone specification](https://gist.github.com/mhevery/63fdcdf7c65886051d55) currently before the 
    [TC39](http://www.ecma-international.org/memento/TC39.htm) committee that determines standards for the JavaScript language.
    You can pick a preferred version of *zone.js* to use (within a compatible version range) 
  
negative.code: 
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      참고: 요리책(cookbook) 또는 가이드 페이지는 *jQuery*와 같은 추가적인 라이브러리가 필요할 수 있습니다.
  
      Note: A cookbook or guide page may require an additional library such as *jQuery*.
  
  :marked
    QuickStart에 필요한 것보다 더 많은 것을 설치할 것입니다.
  