Re: Small typo in calc.texi

[Eli Zaretskii]

> From: Vladimir Nikishkin <lockywolf@gmail.com>
> Cc: emacs-devel@gnu.org
> Date: Tue, 13 Jun 2023 20:10:40 +0800
> 
> >> @expr{C_{(-1)}} corresponds to the midi note number 0
> >
> > Are you sure?  Texinfo in general doesn't allow unadorned { or }.
> >
> > What is the problem with @expr{C_(-1)}?
> 
> What does "unadorned" mean?

The literal characters '{' and '}'.