Apple's custom low-overhead protocol for ad-hoc networking of Macintosh computers and their printers.
Apple continues to support [[AppleTalk]] in OS X, however it has been depricated in favor of TCP/IP and Zero-Conf (aka Rendezvous)
Gursharan S., Andrews, R., and A. Oppenheimer, "Inside [[AppleTalk]]" , Second Edition, Addison Wesley, 1990.