4GLOSSARY
TSR Terminate and stay resident. A program that upon execution,
loads itself (or an executable portion of itself) into PC
working memory (RAM). It can be activated at any time with
a speciļ¬ed key sequence.
WAN Wide area network. This is a network covering large distances
(50 square miles or more) that may include packet-switched,
or public data, and value-added networks.