anchor.diff:  Therefore, the {project-name} converter “chunks” the AsciiDoc source document into multiple XHTML files to add to the EPUB3 archive.
   Like other converters, Asciidoctor EPUB3 handles this chunking task by automatically slicing up the XHTML output at predetermined heading levels.
   
  -When `doctype` attribute is set to `book`, each top-level section will become a separate ebook "chapter" file.
  +When the `doctype` attribute is set to `book`, each top-level section will become a separate e-book "chapter" file.
   This includes preface, bibliography, appendix, etc.
  -This behavior can be configured via `epub-chapter-level` document attribute.
  -
  -Otherwise, whole document is converted to a single ebook chapter.
  +This behavior can be configured via the `epub-chapter-level` document attribute.
  +
  +Otherwise, the whole document is converted to a single ebook chapter.
   
   You may specify custom chapter filenames by assigning IDs to sections:
   
  
positive.code: This optional environment variable tells the gem installer to link against the C libraries on the system, if available, instead of compiling the libraries from scratch.
  This speeds up the installation of Nokogiri considerably.
  
  If you want to syntax highlight source listings, you'll also want to install Rouge, CodeRay or Pygments.
  Choose one (or more) of the following:
  
  .Rouge
  
negative.code: 
  == E-book Reader Recommendations and Quirks
  
  EPUB3 e-readers will provide the best reading experience when viewing a book generated by {project-name}.
  Here's a list of some of the e-readers we know to have good EPUB3 support and the systems on which they run:
  
  * http://www.amazon.com/gp/feature.html?docId=1000493771[Amazon Kindle] (most platforms)
  