[ESS] typo in documentation: essa-r?

[Stephen Eglen]

> 
> OK, got it. But maybe the current location of, for instance, "ess-r-var"
> can be given somewhere in the manual? I guess "ess-r-var" can be of
> intrinsic interest, not just historic interest (I find what it does rather
> neat).  (I understand this is a minor point; what happened to me was that
> I found the description of what "ess-r-var", and then I tried to use it
> via essa-r).

Sure.  I can draft something, since I wrote ess-r-var!

Stephen