Atari XM301 Owner's Manual page 42

Start/Stop Bits Bits that signal the beginning or end of an
asynchronous serial transmission.
Switched-Telephone Network The familiar dial-up phone system;
so-called because the phone system is a network of local offices
where electronic switching equipment automatically routes calls to
the proper destination.
SysOp Abbreviation for System Operator, the individual who main¬
tains a bulletin board system.
Terminal Software A computer program that converts a microcom¬
puter into a "smart" terminal capable of interacting with a central-
site computer. XE Term gives your ATARI Computer the instructions
that let it communicate with another computer over the phone
lines.
X/ON-X/OFF Mnemonic abbreviations for the "start/stop transmis¬
sion" signals sent by a receiving modem; they tell a transmitting
modem when to start or stop sending information.
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