Hello Emacs

Here is a little documentation improvement I think. The doc of variable
mouse-wheel-progressive-speed says

If non-nil, the faster the user moves the wheel, the faster the scrolling.
Note that this has no effect when ‘mouse-wheel-scroll-amount’ specifies
a "near full screen" scroll or when the mouse wheel sends key instead
of button events.

That explains (the first sentence) the effect when the variable is nil,
the scrolling speed is proportional to the wheel speed. When non-nil,
scrolling speed will increase (progress) the more the wheel is turned.
Isn't it.

Attached is a patch updating the docs of the variable and in info.

GNU Emacs 28.0.50 (build 2, x86_64-pc-linux-gnu, GTK+ Version 3.24.5,
cairo version 1.16.0) of 2020-12-12

Best regards
--
Tomas