bug#21048: 24.4; Letrec docs

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Date: Wed, 09 Oct 2019 06:06:51 +0200
> Cc: 21048@debbugs.gnu.org
> 
> Rustom Mody <rustompmody@gmail.com> writes:
> 
> > I find letrec is not in the info pages though it has a brief
> > 'describe-function' result.
> > Eli Zaretsii suggested a bug-report, so here it is!
> 
> I have now documented letrec in the Emacs 27 Emacs Lisp manual.

Thanks, but I have trouble understanding what the text you wrote
says.  I think it needs clarifying, or maybe a descriptive enough
example.