signature The small, usually four-line message at the bottom of a piece of email or a Usenet article. In Unix, it's added by creating a file ..signature in the user's home directory. Large signatures are a no-no.

summarize To encapsulate a number of responses into one coherent, usable message. Often done on controlled mailing lists or active newsgroups, to help reduce bandwidth.

synchronous Data communications in which transmissions are sent at a fixed rate, with the sending and receiving devices synchronized.

TCP/IP (Transmission Control Protocol/Internet Protocol)
A set of protocols, resulting from ARPA efforts, used by the Internet to
support services such as remote login (telnet), file transfer
(FTP) and mail (SMTP).

telnet The Internet standard protocol for remote terminal connection service. Telnet allows a user at one site to interact with a remote timesharing system at another site as if the user's terminal were connected directly to the remote computer.

terminal server A small, specialized, networked computer that connects many terminals to a LAN through one network connection. Any user on the network can then connect to various network hosts.

TeX
A free typesetting system by Donald Knuth.

twisted pair Cable made up of a pair of insulated copper wires wrapped around each other to cancel the effects of electrical noise.

UUCP (Unix to Unix Copy Program) A store-and-forward system, primarily for Unix systems but currently supported on other platforms (e.g. VMS and personal computers).

WAN (Wide-Area Network)
A network spanning hundreds or thousands of miles.