Windows PowerShell is a new .NET-based environment for scripting and is an interactive command-line shell. WPS is an optional feature on Windows Server 2008 and an add-on for Windows XP, Vista, and Server 2008. Commands in WPS are called commandlets. The PSCX extends WPS with additional commandlets.
The PowerShellPlus is an alternative shell for WPS commands and an editor for WPS scripts.
In the next chapter, you learn much more about commandlets and pipelines. You also learn how to get help if you are seeking a command or the available options for a commandlet.