Xerox 721 Message Manual page 306

GLOSSARY
job control Program called into storage to prepare each job or job step to
be run.
job management Collective functions of job scheduling and command processing.
JSL job source library. Collection of uncompiled job descriptions.
See also job; JDE; and JDL.
keyboard Group of alphabetic, numeric, and/or function keys used to enter
information into a system.
keyword Required part of a command. See also operator command.
label 1. In data storage, a reference to a file saved on tape or disk, a
record indicating the file name or date created, or other control
information. 2. In programming, a name assigned to a particular
instruction or portion of a program as a locational reference (the
computer translates the label into an address).
landscape page orientation Orientation of print lines or top of an illustration parallel to the
long edge of the paper if the sheet is within the standard size
range. (Sheets larger than standard have the reverse print
orientation.)
language Defined set of characters and symbols combined together by
specific rules. See also high-level language; low-level language.
laser printing Technology that uses a laser to transfer character forms to a page
by direct or indirect means.
latent image Static charge present on the photoconductor before contact with
dry ink particles.
leading 1. Vertical distance between lines (also called line space),
measured from a baseline of one line to the baseline of the next.
2. Extra spacing between lines of type. 3. In typography,
spacing between lines and paragraphs.
LED light emitting diode. Solid substance that glows when a current
is passed through it. Often used for indicator lights on disk
drives or modems, as well as for displays on other electronic
equipment.
LEF long-edge feed. The movement of paper through the printer in
the direction of the paper length (the longer side of a sheet of
paper).
legal size Sheet the standard size of legal briefs, 8.5 by 14 inches.
letter size Paper sized 8.5 by 11 inches/216 by 279 mm.
XEROX 4635 LASER PRINTING SYSTEM MESSAGE GUIDE GLOSSARY-13