bug#65070: 29.1; (Only on Windows) Both touchpad scroll gestures scroll the screen up and down.

[Eli Zaretskii]

> From: Po Lu <luangruo@yahoo.com>
> Cc: kzhr@d1.dion.ne.jp,  hiroya.ebine1@gmail.com,  max@mal-richtig.de,
>   65070@debbugs.gnu.org
> Date: Sun, 20 Aug 2023 15:43:51 +0800
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > So, when PIXEL-DELTA is non-nil, LINES is (or should be) ignored?
> 
> Not when PIXEL-DELTA is non-nil, but when mwheel-coalesce-scroll-events
> is disabled.
> 
> > What happens on NS, which does provide this information?
> 
> I'm not sure, only the NS port developers who introduced LINES know
> that.

Thanks, I've now updated the documentation with this information.