anchor.diff:  The user manual for the latest release is at http://picocli.info.
   For the busy and impatient: there is also a link:quick-guide.html[Quick Guide].
   
  -== Introduction
  +== Introducing Picocli
  +Picocli is a one-file framework for creating Java command line applications with almost zero code.
   Picocli aims to be the easiest way to create rich command line applications that can run on and off the JVM.
   
  -Picocli is a one-file framework for creating Java command line applications with almost zero code.
  -Supports a variety of command line syntax styles including POSIX, GNU, MS-DOS and more.
  -Generates highly customizable usage help messages with <<ANSI Colors and Styles,ANSI colors and styles>>.
  +=== Features
  +Picocli supports a variety of command line syntax styles including POSIX, GNU, MS-DOS and more and generates highly customizable usage help messages with <<ANSI Colors and Styles,ANSI colors and styles>>.
   Picocli-based applications can have link:autocomplete.html[command line TAB completion] showing available options, option parameters and subcommands, for any level of nested subcommands.
   Picocli-based applications can be ahead-of-time compiled to a image:https://www.graalvm.org/resources/img/logo-colored.svg[GraalVM]
   <<GraalVM Native Image,native image>>, with extremely fast startup time and lower memory requirements, which can be distributed as a single executable file.
   
  -
  -image:checksum-usage-help.png[Screenshot of usage help with Ansi codes enabled]
  -
   Picocli <<Generate Man Page Documentation,generates beautiful documentation>> for your application (HTML, PDF and Unix man pages).
   
   Another distinguishing feature of picocli is how it aims
   to let users run picocli-based applications without requiring picocli as an external dependency:
   all the source code lives in a single file, to encourage application authors to include it _in source form_.
   
  -How it works: annotate your class and picocli initializes it from the command line arguments,
  -converting the input to strongly typed values in the fields of your class.
  -
  -TIP: picocli also provides a <<Programmatic API,programmatic API>>, separately from the annotations API.
  -
  -.A full working example picocli-based command line application
  +=== Sample application
  +Let's get started by looking at minimal picocli-based command line application. This fully working sample app may be used to calculate the checksum(s) of one or more file(s) given as command line parameter(s):
  +
  +.Synopsis of sample application
  +image:checksum-usage-help.png[Screenshot of usage help with Ansi codes enabled]
  +
  +.Source code of sample application
   [[CheckSum-application]]
   [source,java]
   ----
  
positive.code: :toc: left
  :numbered:
  :toclevels: 2
  :toc-title: Features
  :source-highlighter: coderay
  //:source-highlighter: highlightjs
  //:highlightjs-theme: darkula
  
negative.code: }
  ----
  
  _This is how it works_: Create a class ➊ that represents your command and annotate this class with @Command ➑. Let this class implement `Runnable` or `Callable` and picocli will kick off your application after parsing is successfully completed. Then, annotate the fields or methods of the command class with @Parameters ➋ and/or @Option ➌ to declare what positional parameters and/or options your application expects. Picocli will convert the command line arguments given to your app to strongly typed values in the fields ➍ of your class. In the `main` method of your class, use the `CommandLine.execute` method ➎ to parse the command line, handle errors, handle requests for usage and version help, and invoke the business logic ➏. Once your business logic finished, you may call `System.exit` ➐ to return an exit code to your caller, indicating success or failure of your business logic. Additionally, you may make use of the <<Mixin Standard Help Options,mixinStandardHelpOptions>> attribute ➑  which adds `--help` and `--version` options to your application.
  
  TIP: Picocli also provides a <<Programmatic API,programmatic API>>, separately from the annotations API.
  
  == Setting up your picocli based project
  You can add picocli as an external dependency to your project, or you can include it as source.
  
  === Add as External Dependency
  