anchor.diff:  }
   ----
   
  -For more detail, see the https://picocli.info/#execute[Executing Commands] section of the user manual.+For more details, see the https://picocli.info/#execute[Executing Commands] section of the user manual.
positive.code:     }
  }
  ----
  
  == Configuration
  The following classes are the main model classes used to configure the parser:
  
  * `CommandSpec`
  * `OptionSpec`
  * `PositionalParamSpec`
  
  
  === `CommandSpec`
  
  ==== Command Name and Version
  `CommandSpec` models a command. It has a name and a version, both of which may be empty.  For example:
  
negative.code: 
  Similar to the annotation API, `OptionSpec` objects have `help`, `usageHelp` and `versionHelp` attributes. When the parser matches an option that was marked with any of these attributes, it will no longer validate that all required arguments exist. See the section below on the `parseWithHandler(s)` methods that automatically print help when requested.
  
  === PositionalParamSpec
  
  `PositionalParamSpec` objects don’t have names, but have an index range instead. A single `PositionalParamSpec` object can capture multiple positional parameters. The default index range is set to `0..*` (all indices). A command may have multiple `PositionalParamSpec` objects to capture positional parameters at different index ranges. This can be useful if positional parameters at different index ranges have different data types.
  
  