Re: MPS signals and Emacs

[Eli Zaretskii]

> From: Gerd Möllmann <gerd.moellmann@gmail.com>
> Cc: eggert@cs.ucla.edu,  eller.helmut@gmail.com,  emacs-devel@gnu.org
> Date: Mon, 22 Apr 2024 10:27:42 +0200
> 
> Eli Zaretskii <eliz@gnu.org> writes:
> 
> > What do "exact reference" and "ambiguous reference" mean, in Emacs
> > terms?
> 
> Ambiguour references are ones that could be a reference or a could as
> well be a random bit pattern.
> 
> An example in Emacs is the control stack marking.

Is that just one example, or is that the _only_ example?  If the
former, what other examples of ambiguous references are there in
Emacs?