RE: Emacs manual, node Transient Mark Mode inaccurately describes region

[Drew Adams]

    > This should be rewritten to say clearly that the region always exists
    > (it is the difference between point and mark), but in t-m-m there is a
    > notion of active region, and the active region is what behaves in the
    > manner described.


    AFAIU you can edit the whole buffer without setting the
    mark. Then there is no region all the time -
    so it don't always exist IMO.

Yes, I know. I didn't want to mention that corner case, and the doc need not
mention it at that point either. The main point should be communicated,
however.