bug#33921: 27.0.50; Default height is inconsistently - and apparently also incorrectly - documented

[Eli Zaretskii]

> Date: Sun, 30 Dec 2018 15:57:47 +0100
> From: martin rudalics <rudalics@gmx.at>
> 
>  > In the Emacs man page, we find for the "-g" (--geometry) option:
>  >
>  >      The width and height are specified in characters; the default is
>  >      80 by 24.
> 
> This must be a very old entry.
> 
>  > In the Emacs info page ("C.8 Options for Window Size and Position"), we
>  > find a different default height:
>  >
>  >     The default frame width is 80 characters and the default height is
>  >     40 lines.
> 
> The default height was changed from 40 to 35 by Chong and from 35 to
> 36 by Eli.  I now updated the value given by the manual of the release
> branch.

I actually think we shouldn't promise any concrete value, and instead
say something vague, like "between 35 and 40, depending on the OS and
the window manager".