anchor.diff:  
   If you download from a distribution link above (zip or tar), you can get started straight away from the command line.
   
  -First, expand the downloaded file. That puts everything in directory asciidoctorj-{artifact-version}.
  +First, expand the downloaded file. That puts everything in directory `asciidoctorj-{artifact-version}`.
   Within that directory are `bin` and `lib` directories.  `bin` contains the executables -- `asciidoctorj` for
   Linux and macOS, and `asciidoctorj.bat` for Windows.  `lib` contains the supporting libraries.
   
   Verify the application runs by specifying the appropriate executable with no parameters;
   it should display the various run options available (i.e., help).
   
  +[source]
  +[subs="specialcharacters,attributes,callouts"]
   ----
   Linux: asciidoctorj-{artifact-version}/bin/asciidoctorj
   Windows: asciidoctorj-{artifact-version}\bin\asciidoctorj.bat
  
positive.code: Boom! That should convert the README to a PDF named README.pdf.
  To create a PDF with a different name -- say, READTHIS.pdf -- just add the -o switch:
  
  ----
  Linux: asciidoctorj-{artifact-version}/bin/asciidoctorj -b pdf -o READTHIS.pdf README.adoc
  Windows: asciidoctorj-{artifact-version}\bin\asciidoctorj.bat -b pdf -o READTHIS.pdf README.adoc
  
negative.code: 
  Next, say you want to convert an ASCIIDOC (.adoc) file -- such as this README -- to a pdf.
  
  [source]
  [subs="specialcharacters,attributes,callouts"]
  ----
  Linux: asciidoctorj-{artifact-version}/bin/asciidoctorj -b pdf README.adoc
  Windows: asciidoctorj-{artifact-version}\bin\asciidoctorj.bat -b pdf README.adoc
  