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Building an About Topic Help File in Powershell

Robert Cain teaches us about teaching others about something:

In my previous post, Fun With PowerShell – Authoring Help, I covered how to author comment based help for your functions.

In addition to help for your functions, it’s also possible to write about_ help. PowerShell itself contains many about topics for PowerShell itself.

These about topics are designed to provide further information for your users, information that may not fit into the confines of a functions help. These texts can be as long as you need.

I will say that the Powershell team nailed it with the way they implemented help.