anchor.diff:  
   === Prerequisites
   
  -The only prerequisite to perform the DocBook to PDF conversion is a Java runtime (JVM) (and, naturally, an internet connection).
  -You can use any recent Java runtime (i.e., Java 6 or better).
  -
  -If Java is setup correctly, you should be able to type:
  +The only prerequisite to perform the DocBook to PDF conversion is a Java Development Kit (JDK), which includes the Java runtime (and, naturally, an internet connection).
  +You can use any recent JDK (i.e., Java SE 6 or better).
  +
  +If Java runtime (JVM) is setup correctly, you should be able to type:
   
    $ java -version
   
  
positive.code: 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.
  The rest of the software is fetched and configured by Gradle.
  ----
  
  
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
  