Link: Windows PowerShell 2.0 Core Help - May 2011 Update

The Windows PowerShell 2.0 Core Help - May 2011 Update CHM file includes updated Cmdlet Help, Provider Help, and conceptual "About" Help topics for the core commands that are built into Windows PowerShell 2.0. The CHM file is enclosed in an executable (.exe) file for secure access. This download does not include Windows PowerShell 2.0 or Help topics for Windows PowerShell Integrated Scripting Environment, or any other Windows PowerShell modules. Earlier versions of these Help topics are included in Windows PowerShell 2.0. To see them, at the Windows PowerShell command prompt, type "Get-Help". These Help topics also appear online in the TechNet Library at Windows PowerShell Core and are updated continually. This download provides a snapshot of the updated topics as of May 2011 in a convenient CHM format.