anchor.diff:    Produce deeply semantic XHTML5 documents, including use of the recommended `epub:type` attribute.
   Exceptional Readability::
     Readers should be drawn into the text so that they read and absorb it.
  -  Maximize the readability of the text using carefully crafted styles, focusing on:
  +  Maximize the readability of the text using carefully crafted styles that are focused on:
     - Custom, readable fonts with strong UTF-8 character support
     - Sufficient line spacing and margins
     - Modular font size scale
  
positive.code: 
  == Introduction
  
  {project-name} is not merely a converter from AsciiDoc to EPUB3 and KF8/MOBI, but rather a tool to help you create aesthetic, professional, _easy-to-read_ e-books.
  Let's face it, many of the technical e-books out there--especially those produced from software documentation--are *_hideous_*.
  The Asciidoctor project wants to disrupt the status quo.
  
  ifdef::env-github[]
  .An excerpt from an e-book produced by {project-name} shown in Day, Night and Sepia mode.
  
negative.code: * https://chrome.google.com/webstore/detail/readium/fepbnnnkkadjhjahcafoaglimekefifl?hl=en-US[Readium] (Chrome)
  * http://www.kobo.com/apps[Kobo] (Android, iOS, OSX and Windows)
  * http://www.namo.com/site/namo/menu/5074.do[Namo PubTreeViewer] (Android, iOS and Windows)
  * http://calibre-ebook.com[Calibre (ebook-viewer)] (Linux, OSX, Windows)
  
  IMPORTANT: To get the full experience, *ensure that the e-reader is configured to use the publisher's styles*.
  Different e-readers word this setting in different ways.
  