The Intrasis Help file gives you more information about Intrasis. You can use it without having Intrasis installed. The current Help File for download is dated 2018-07-26 and is not included in the installation package.
Replace the current version of your helpfile in the Data folder in your Intrasis Installation folder, e.g. C:\Program Files (x86)\Intrasis\Data with an unzipped version of the help file.