Xerox 721 Message Manual - page 297

GLOSSARY

GLOSSARY-4

XEROX 4635 LASER PRINTING SYSTEM MESSAGE GUIDE

carriage return

Control character that causes the printing system to start printing

at the left margin of the current line unless set to be interpreted

as a line end. 

channel 

1.  In data communications, a path or line that enables two or

more devices to communicate (sometimes called a circuit,

facility, or link).  2.  In computers, a path for communication

between the central processing unit (CPU) and input/output

units, or between the CPU and peripheral devices. 

character 

Single printable letter (A-Z), numeral (0-9), symbol (& % #), or

punctuation mark (, .  ! ?) used to represent data.  Characters can

also be nonprinting, such as space, tab, or carriage return. 

character cell 

Digitized space containing a single character within a font set.

character code 

Code representing alphanumeric information, for example, ASCII.

character code identifier 

Code associated with the universal identifier “Xerox” to indicate

the version of the Xerox character code standard used to code

Interpress strings. 

character set

Number of different characters used by a particular device,

including alphabetic, numeric, and special characters such as

symbols. 

clearinghouse service 

“Directory” of registered users, services, and other resources,

allowing relevant information about each item to be looked up

by name.  An internetwork can contain any number of

clearinghouse services, each holding single domain of overall

database.

client layer

The software interface used by the AIM task and the Output task

to communicate with the printer, allowing printing commands

and fault and status information to be exchanged. 

clocking

A method of synchronizing the sending and receiving of data

communications devices.  Clocking allows synchronous

transmission at high speeds. 

cluster

Group of paper feeder trays, usually containing the same size and

type of paper (stock).  Each cluster has a name, consisting of one

to six alphanumeric characters.  See also stock; stockset.

CME

copy modification entry.  Entry modifying the output printing

characteristics of a report on a copy-to-copy basis. 

code

1.  Set of symbols representing data or instructions to a

computer.  2.  To write a list of instructions (software) to cause

the product/system to perform specified operations. 

code conversion

Translation of one type of character or symbol code to another.