bug#48504: Improve style of C-h t description (Preface)

[Eli Zaretskii]

> Cc: 48504@debbugs.gnu.org
> From: Sebastian Urban <mrsebastianurban@gmail.com>
> Date: Tue, 18 May 2021 22:35:37 +0200
> 
> >> Currently, in the Preface of the Emacs manual (EMACS.TEXI - L1291),
> >> there is:
> >>     To run the tutorial, start Emacs and type @kbd{C-h t} (which is
> >>     ``control h and then t'').
> >>
> >> I think, the part between parens should look better, e.g. similar to
> >> this part of SCREEN.TEXI (L126):
> >>     ...(hold down @key{Ctrl} and type @kbd{x}, then let go of
> >>     @key{Ctrl} and type @kbd{=})...
> >> ...i.e.:
> >>     ...(hold down @key{Ctrl} and type @kbd{h}, then let go of
> >>     @key{Ctrl} and type @kbd{t}).
> > 
> > We didn't yet introduce the Ctrl etc. notation at that place.
> 
> What about "Control" instead of "Ctrl"?

You mean, just capitalize what the text already says? no objections
here.