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6287 ULTRA Users ManualPage 19-2
Bottom margin The last line on which the ULTRA will
allow a character to be printed.
Break An interruption of a transmission.
BS Backspace.
Buffer A block of internal memory that stores
information until it is ready to be used.
Byte A unit of information consisting of
eight binary bits. Character codes are
often represented in bytes.
C
C0 05 header Two DSC characters that some
applications send to the printer.
Carriage Return A control character that (unless set to be
interpreted as a line end) causes the
printer to begin printing at the left
margin of the current line.
Centronics The printer manufacturer that produced
the parallel interface that is now the
industry standard. Also used to refer to
the interface itself.
CICS/VS Customer Information Control System/
Virtual System.
Cluster controller A down-line processor that collects data
from a number of low-speed devices,
then transmits the concentrated data
over a single communications channel.
CNT Count. The number of bytes in a
command string.
Coax Coaxial cable. The type of cable used to
interface the ULTRA with the
controller. Standard RG62 A/U coax is
recommended for use in the 3270 IDS.
Column The vertical members of one line of an
array.
Configuration To assemble a collection of hardware
and software into a system and to