How to create a short help for Evil

How to provide a short help page for Evil? I need a command line

:help

that lists the Evil key bindings whenever the user is in evil-mode. In emacs mode, the user must get the normal emacs help. I will provide the text for the help file.

The persons who need the help are lawyers who use emacs, since it offers a program called org-mode, that lawyers need for many of their applications. These lawyers don't know much about Vim, therefore they need the help file. I posted this question in this Vim group, because most Evil users are from the Vim community.

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