anchor.diff:  puts "Hello, World!"
   
   TIP: asciidoctor-fopub takes the pain out of converting a DocBook file to a PDF file like this one.
  -All you need is a Java runtime and this project.
  +All you need is a Java Development Kit (JDK) and this project.
   The rest of the software is fetched and configured by Gradle.
   ----
   
  
positive.code: OpenJDK 64-Bit Server VM (build 23.7-b01, mixed mode)
  ....
  
  If not, you can install a Java runtime using your system's package manager or by downloading a distribution from the http://java.com/en/download[Java download site].
  
  It's not even necessary to install the Java runtime into your system.
  Simply set the +JAVA_HOME+ environment variable to the location where you extract the distribution.
  
  Next, you need to retrieve the asciidoctor-fopub project.
  
negative.code: 
  DocBook-to-PDF conversion using free software made easy! (based on DocBook XSL and Apache FOP)
  
  Using the asciidoctor-fopub project, you can convert any DocBook file into a nicely formatted PDF with nothing more than a Java runtime (JVM) and development kit (JDK).
  All the open source software required to perform the conversion is automatically fetched from the internet the first time you run it.
  
  == Doing is believing
  