The Save-Help command can be used with modules that support updatable help. It saves help content for modules to a folder; for example, the help content for the DnsClient module can be saved to C:PSHelp (the directory must already exist):

Save-Help -DestinationPath C:PSHelp -Module DnsClient 

Alternatively, the help content for all modules may be saved, as follows:

Save-Help -DestinationPath C:PSHelp 

The process creates an XML formatted HelpInfo file that holds the source of the help content and a CAB (cabinet) file named after the module and culture.

Opening the CAB file shows that it contains a number of XML formatted help files, as shown in the following screenshot:

Saved help content can be copied over to another computer and imported using Update-Help. This technique is very useful for computers that do not have internet access as it means help content can be made available.