"Emacs CVS has an interesting new feature: it now accepts a --daemon command line option which makes it start up as a Unix daemon; it detaches from the controlling terminal, starts up a new process session, goes to the background, starts an Emacs server and just waits for connections. The user can then use emacsclient to create new frames (console or graphical) for the background Emacs, using the new multi-tty abilities of Emacs 23..."