IBM 5251 Series Maintenance Information Manual page 14

stat addr: Station address.
stem: See key stem.
stiffener: A part used to supply rigidity to a logic card
or planar.
storm: Electrical discharges in the air.
strain relief cable: A cable that supports the planar.
SVCS: Services.
SYS: System.
Sys Req key: A key that is used to send a request
directly to the system.
taper: Increasing in size toward one end.
TB: Terminal block.
Terminator switch: A switch used to terminate the
customer system cable at the last display station or
printer in a series. This switch is a part of the Cable
Thru feature on a display station.
theory: A section of this manual that includes data
flow, functional units, and features.
transfer: To move from one person, place, or thing to
another.
twinaxial cable: A shielded twisted-pair cable that
connects a display station or printer to a controller.
typamatic key: A repeat-action key on the keyboard.
undefined: The meaning is not known or described.
underscore: A line under all positions of a field.
Underscore is controlled by an attribute.
US: United States.
Vac: Volts alternating current.
Vdc: Volts direct current.
verification: Testing an operation or machine.
video: Pertains to the display screen image.
YY /MM/DD: Year, month, and day.
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