User's Manual

GLOSSARY
XEROX LASER PRINTING SYSTEMS TAPE FORMATS MANUAL GLOSSARY-15
operating system Basic host- or LPS-resident controlling program that governs the
operations of a computer, such as job entry, input/output, and data
management. The operating system is always running when the
computer is active. Unlike other types of programs, it does not run to
an end point and stop. The operating system of a Xerox LPS is
referred to as the operating system software (OSS).
operation Well-defined action that, when applied to any permissible
combination of known entities, produces a new entity.
operator area The 24-inch exclusive clearance that must be available directly in
front of each component of an LPS for operator activities.
operator command Statement to control a program, issued through a console device or
terminal, causing a control program to provide requested information,
alter normal operations, initiate new operations, or terminate existing
operations.
orientation 1. In reference to image area, orientation describes whether the
printed lines are parallel to the long edge of the paper or the short
edge of the paper. 2. Choice of printing portrait (vertically) or
landscape (horizontally).
origin In reference to image area, this is the upper left corner of a sheet.
output 1. Material produced by a peripheral device of a computer, such as a
printout or a magnetic tape. 2. Result of completed operations.
overprinting Printing more than one character at the same position.
overprint lines Print lines whose carriage control specifies printing with no line
spacing after the last printed line.
overprint ratio Maximum number of variable data and form characters that may be
intersected by a single scan line.
override To take precedence or priority over, to overrule.
overstrike To print characters over each other.
page 1. In computer programming, a block of instruction, data, or both that
can be located in main or auxiliary storage. 2. In word processing, a
defined section of a document.
page orientation Direction in which data is printed on a report. See also landscape
page orientation; portrait page orientation.
parameter Part of a command, other than the keyword. See also keyword;
operator command.