# apropos randr
xbacklight (1)       - adjust backlight brightness using RandR extension
xrandr (1)           - primitive command line interface to RandR extension

Therefore this should be
xrandr (1)           - adjust size, orientation, reflection of a screen (using RandR extension)

As whatever the RandR extension was, doesn't matter/isn't documented at
the apropos level anyway.



By the way
$ man xrandr
...
       Xrandr is used to set the size, orientation and/or reflection of the outputs for a screen. It can also set the screen size.
                                 ^^^^                                                     ^^^^^^  xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
You already mentioned that!

Control: tags 941422 fixed-upstream
https://gitlab.freedesktop.org/xorg/app/xrandr/-/commit/f655af4ed98b11b66f2d49d273ad0d989fec6e5b

I also reworded that upstream to try to show the difference between the size of
the outputs displaying parts of the logical screen, versus the overall size of
the logical screen.

A more in-depth explanation, with diagrams, is shown at
https://gitlab.freedesktop.org/xorg/proto/xorgproto/-/blob/xorgproto-2024.1/randrproto.txt?ref_type=tags#L54
but I don't think that will translate into the man page.