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Announcing the new pipeline for publishing updateable help
Describes how to workaround the error when you try to update help for PSReadline.
UPDATE: We are now publishing updated help for PowerShell 5.1 and higher. See the announcement. PowerShell's Updatable Help system was introduced in PowerShell 3.0. It was designed to assure that you always have the newest help topics on your local computer so that you can read them at the command line. Help was updated with every new release...