bug#22453: [PATCH] Support for switching to hexl-mode from image mode

[Alexander Kuleshov]

I have yet another one question. You wrote:

> Please provide an update for the user manual, which describes
> "C-c C-c", to describe "C-x C-x" as well.

This patch already has description of this. If I select `descover-mode`
I see there:

Image[png] mode defined in ‘image-mode.el’:
Major mode for image files.
You can use C-c C-c or C-c C-x
to toggle between display as an image and display as text or hex.

And also:

C-c C-c         image-toggle-display
C-c C-x         image-toggle-hex-display

Is it enough? I tried to search documentation which is related to
the image-mode in the emacs's source code, but didn't find anything.