It's not exactly the same. There is no connection between locked and saved states.

Evgeni


On Thu, May 30, 2013 at 7:10 PM, Michael Heerdegen <michael_heerdegen@web.de> wrote:
E Sabof <esabof@gmail.com> writes:

> Plus there is no easy way to protect a buffer from accidental
> killing.

There is a built-in package for exactly that: emacs-lock.el.

Michael.