IBM 6400 Setup Manual page 335

command delimiter
command sequence
compatibility
compressed
configuration
controller
cpi
cps
CPU
CR
CTØ
CTA
An ASCII character used to begin a command string (same as
SFCC). Commonly used command delimiters are ESC (1B hex)
and SOH (01 hex).
Two or more bytes that instruct the printer to perform a special
function. The first character in the sequence is a special function
control character (SFCC), which alerts the printer that the string
is a command sequence.
See also escape sequence, SSCC, and SFCC sequence.
The ability of one printer to accept and properly process
commands meant for a different printer. (See also emulation and
protocol.)
Refers to a typeface with a font width approximately 60% smaller
than normal. Character height is not changed.
Refers to the operating properties that define how the printer
responds to signals and commands received from the host
computer at the printer interface. These properties are called
configuration parameters and must be set to match the operating
characteristics of the host computer system.
An independent logic unit in a data processing system that
controls data paths between the central processing unit and one or
more units of peripheral equipment.
Characters per inch: a measurement of monospaced fonts
indicating the horizontal character density. For example, 10 cpi
means 10 characters can be printed in one horizontal inch.
Characters per second: a measurement of the print speed of a
serial (character) printer.
Central Processing Unit.
Carriage Return.
Abbrev. for Coax/Twinax only: a model available in a previous
generation of the IBM Line Matrix Printer.
Abbrev. for Coax/Twinax/ASCII.
Glossary–3