Rasterizer A device that converts an image
sequentially line by line, instead of by
vector.
Reset To return components to a specified
static state.
Right margin The last column at which data can be
printed on a page.
RM Right margin.
ROM Read-only memory.
S
SCS SNA character string. EBCDIC control
codes that are used to format data.
Sense codes An SNA code that describes an
exception condition.
Set horizontal format The SCS command that describes left
and right margins and horizontal tab
stops.
Set vertical format The SCS command that describes top
and bottom margins and vertical tab
stops.
SHF Set horizontal format.
SLD Set line density.
SNA System network architecture. An IBM
communication standard.
Space A print position where no character is
printed.
SVF Set vertical format.
T
Tab A carriage control that specifies output
columns and rows.
Terminator A character or sequence of characters
that indicates the end of a data string
that is variable in length.
Timer A configuration option that determines
how long an idle host or alternate host
controls an output port.