IBM 6400i Setup Manual page 345

Roman An NLQ type style in which the characters are upright
and the edges of the characters have a serif. This
sentence is printed in a Roman type style.
RTS Request To Send
SA Set Attribute
SAA Systems Application Architecture
sans serif An NLQ type style in which the characters are upright
and blocked. This sentence is printed in a sans serif type
style.
SCS System Network Architecture (SNA) Character String.
Usually commands to set printer format, etc.
serial communication
The sequential transmission of data, in which each
element is transferred in succession.
set To turn on, activate, invoke, or enable.
SFCC sequence Special Function Control Character sequence. Two or
more bytes that describe a specific printer control
function. The first byte is always the SFCC. This also
applies to IGP options.
shuttle The subassembly in a line matrix printer that includes the
hammer bank assembly, plus some or all of the drive
mechanism.
size, type See point.
SLD Set Line Density
slew Rapid vertical paper movement.
SNA Systems Network Architecture
SOH Start Of Header
spacing See font, proportional and font, monospaced.
SSCC SuperSet Control Character. See escape sequence and
command sequence.
start bits In serial data transfer, a signal indicating the beginning of
a character or data element.
stop bits In serial data transfer, a signal indicating the end of a
character or data element.
string Two or more bytes of data or code treated as a unit.
style, type See type style.
subnet mask A binary value used to divide IP networks into smaller
sub-networks or subnets. This mask is used to help
determine whether IP packets need to be forwarded to
other subnets.
symbol set See character set.
TCB Task Control Block
TD Transmit Data
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