anchor.diff:  *  {uri-issues}[issues] の修正
   * パッチの批評
   
  -////
  -* by using prerelease (alpha, beta or preview) versions
  -* by reporting bugs
  -* by suggesting new features
  -* by writing or editing documentation
  -* by writing specifications
  -* by writing code -- _No patch is too small._
  -** fix typos
  -** add comments
  -** clean up inconsistent whitespace
  -** write tests!
  -* by refactoring code
  -* by fixing {uri-issues}[issues]
  -* by reviewing patches
  -////
  -
   {uri-contribute}[Contributing] ガイドはどうやってスタイルをつくるか, issueを送るか, 機能リクエスト, コーディング, ドキュメンテーションをAsciidoctor Projectにするかの情報を提供しています.
  -//The {uri-contribute}[Contributing] guide provides information on how to create, style, and submit issues, feature requests, code, and documentation to the Asciidoctor Project.
   
   == Getting Help
   
   Asciidoctorプロジェクトはあなたが簡単に著作を書いて, 配布するのをたすけるため開発されています.
   しかしあなたのフィードバックなしにはできません!
   ディスカッションリストで, Twitterで, チャットルームで, 質問し, プロジェクトのあらゆる側面について話し合うようお勧めします.
  -////
  -The Asciidoctor project is developed to help you easily write and publish your content.
  -But we can't do it without your feedback!
  -We encourage you to ask questions and discuss any aspects of the project on the discussion list, on Twitter or in the chat room.
  -////
   
   Discussion list (Nabble):: {uri-discuss}
   Twitter:: #asciidoctor hashtag or @asciidoctor mention
   Chat (Gitter):: image:https://badges.gitter.im/Join%20In.svg[Gitter, link=https://gitter.im/asciidoctor/asciidoctor]
  -////
  -Chat (IRC):: {uri-irc}[#asciidoctor] on FreeNode IRC
  -////
   
   ifdef::env-github[]
   Further information and documentation about Asciidoctor can be found on the project's website.
  
positive.code: もしEclipseのようなIDEを使っているなら, 同様にエンコーディングをUTF-8にするのを忘れないでください.
  AsciidoctorはUTF-8が使われているところで最高の働きを見せます.
  ====
  ////
  [CAUTION]
  ====
  If you're using a non-English Windows environment, you may bump into an `Encoding::UndefinedConversionError` when invoking Asciidoctor.
  To solve this issue, we recommend changing the active code page in your console to UTF-8:
  
   chcp 65001
  
  Once you make this change, all your Unicode headaches will be behind you.
  If you're using an IDE like Eclipse, make sure you set the encoding to UTF-8 there as well.
  Asciidoctor works best when you use UTF-8 everywhere.
  ====
  ////
  
  == Installation
  
  
negative.code: # gem 'asciidoctor', '1.5.4'
  ----
  
  . Gemfileを保存
  . ターミナルを開き, gemをインストール:
  
  