PowerShell ISE 3 and later
When you have downloaded the PowerShell help files (using Update-Help from an elevated shell), you can use the Get-Help cmdlet to find background information about many useful topics. This would list all topics, for example, that include the keyword “Parameter”:
PS> Get-Help parameter Name Category Module Synopsis ---- -------- ------ -------- Get-ClusterParameter Cmdlet FailoverClusters Get-Cl... Set-ClusterParameter Cmdlet FailoverClusters Set-Cl... about_CommonParameters HelpFile Descri... about_Functions_Advanced_Param... HelpFile Explai... about_Parameters HelpFile Descri... about_Parameters_Default_Values HelpFile Descri... about_ActivityCommonParameters HelpFile Descri... about_WorkflowCommonParameters HelpFile
Any generic help topic starts with “about_”.
In the PowerShell ISE, simply click into one of the listed names, then press F1, to open the associated help in a separate help window.