Some users want to use the command line of the GnuPG commands
or have in depth technical questions.
https://gnupg.org/documentation/manuals.html only provides the most current version
of the technical manuals. User want to have an easy way to find the documentation
that matches the installed version. Even when in a situation where there is no internet connection.
Solution idea:
Include the technical manuals in the distribution package when building.
For Gpg4win 2.3.3 this would be GnuPG 2.0.30 set of manuals and the build targets already include
HTML and PDF.
Add an entry to the Gpg4win submenu with something like "Technical manuals" and open the place
in the filesystem where the html and pdf files are, a bit like https://gnupg.org/documentation/manuals/