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JES3. An MVS subsystem that receives jobs into the
system, converts them to internal format, selects them
for running, processes their output, and purges them
from the system. In complexes that have several loosely
coupled processing units, the JES3 program manages
processors so that the global processor exercises
centralized control over the local processors and
distributes jobs to them via a common job queue.
K
KB. Kilobyte (1KB=1 024 bytes).
L
LAN. Local area network.
landscape orientation. Text and images that are
printed parallel to the longer side of the forms.
laser (light amplification by stimulated emission of
radiation). A device that emits a beam of coherent
light.
latent image. In a printer, the invisible image that
exists in the sensitized material after exposure but
before development.
layout plan. A list of requirements, such as electrical
and space, that must be considered before installing the
IBM InfoPrint 3000.
library. A collection of related files. For example, one
line of an invoice may form an item, a complete invoice
may form a file, and the collection of inventory control
files may form a library. The libraries used by an
organization are known as the data bank.
licensed program. A separately priced program that
bears an IBM copyright and is offered to customers
under the terms and conditions of the Agreement for
IBM Licensed Programs.
line printer. A printer that prints a line of characters
as a unit. Contrast with page printer.
logical page. The print on the page, such as composed
text, graphics, and fonts within defined margins.
logo. An identifying emblem, statement, or motto of a
company.
M
MB. Megabyte (1MB=1 048 576 bytes).
MICR. Magnetic ink character recognition.
microcode. In the InfoPrint 3000, refers to the
microprogramming stored on the microcode (or EC)
diskette. Microcode is used by the control unit to
manage the printer and its functions.
microperforation. Extremely small perforations. After
forms are separated, those with microperforations
typically have smoother edges than those with regular
perforations.
MIH. Missing interruption handler.
MMR. Modified-Modified READ; 2-dimensional
image compression algorithm. Also referred to as
CCITT Group 4.
MR. Modified READ; (READ=Relative Element
Address Designate) 2-dimensional image compression
algorithm. Also referred to as CCITT Group 3.
Multiple Virtual Storage/System Product (MVS/SP).
Consisting of MVS/System Product Version 1 and the
MVS/370 Data Facility Product operating on a
System/370 processor.
N
nonimpact printer. A printer in which printing is not
the result of mechanical impacts. Contrast with impact
printer.
nonprocess runout (NPRO). An operation that moves
forms through the forms path without printing.
O
OCR. Optical character recognition.
offset paper. A grade of paper to which sizing is
added to resist moisture and surface during printing by
ink presses.
OGL. Overlay Generation Language.
operating environment. The physical environment; for
example, temperature, humidity, layout, or power
requirements.
operating requirements. A list of requirements, such
as environmental, electrical, and space, that must be
satisfied before the IBM InfoPrint 3000 can be installed.
Operating System/Virtual Storage (OS/VS). A
compatible extension of the IBM System/360 Operating
System that supports hardware and the extended
control facilities of System/370
optical character recognition (OCR). Character
recognition that uses optical means to identify graphic
characters.
orientation. The number of degrees an object is
rotated relative to a reference; for example, the
301
Glossary
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