anchor.diff:  
   === Prerequisites
   
  -Karaf requires a Java SE 7 or Java SE 8 environment to run. Refer to http://www.oracle.com/technetwork/java/javase/ for details on how to download and install Java SE 1.7 or greater.
  +Karaf requires a Java SE 8 or Java SE 9 environment to run. Refer to http://www.oracle.com/technetwork/java/javase/ for details on how to download and install Java SE 1.8 or greater.
   
   * Open a Web browser and access the following URL: http://karaf.apache.org/index/community/download.html
   * Download the binary distribution that matches your system (zip for windows, tar.gz for unixes)
  
positive.code: You can now run your first command.  Simply type the `<tab>` key in the console.
  
  ----
  karaf@root()> Display all 294 possibilities? (y or n)
  ...
  shell:logout                        shell:more                          shell:new                           shell:printf                        shell:sleep                         shell:sort                          shell:source
  
negative.code: Alternatively, you can also run the following command:
  
  ----
  karaf@root()> feature:install system
  karaf@root()> system:shutdown
  Confirm: halt instance root (yes/no): yes
  karaf@root()>
  ----
  
  halt is also an alias for system:shutdown:
  