On Sat, Nov 14, 2020 at 06:17:07PM -0500, Stefan Monnier wrote:
> >> C-x SPC
> >
> > You don't actually need to use a rectangle selection, as all the
> > rectangle functions figure out what rectangle you mean with just a
> > normal region.  So this can just be C-SPC.
> >
> >> C-t
> >
> > "C-x r t" is the default binding, I'm assuming this is just a typo?
> 
> No, it's that after `C-x SPC` the user is placed in the
> `rectangle-mark-mode` minor mode where `C-t` has a special binding
> (the same as `C-x r t`).

And... to top that off, that one really highlights a rectangle, which
looks wickedly cool ;-)

Since I've always been using C-SPC for that, I hadn't noticed. Thanks
to all involved in that little present!

Cheers
 - t