IBM System/370 Operator's Reference Manual page 238

job management: A general term for the functions of job scheduling and command
processing.
job queue: (See input queue.)
job (JOB) statement: The control statement in the input stream that identifies the
beginning of a series of job control statements for a single job.
job step: A unit of work associated with one processing program or one cataloged
procedure, and related data.
I
language translator: Any assembler, compiler, or other routine that accepts statements
in one language and produces equivalent statements in another language.
library: 1. A collection of objects (for example, data sets, volumes, card decks) associ·
ated with a particular use, and identified in a directory. See job library, link library,
system library. 2. Any partitioned data set.
limit priority: In OSIVS2 and MVT, a number associated with a task in a multitask
operation, representing the highest dispatching priority that the task can assign to itself
or to any of its subtasks.
link library: A partitioned data set which, unless otherwise specified, is used in fetch·
ing load modules referred to in execute (EXEC) statements and in ATTACH, LINK,
LOAD, and XCTL macro instructions.
linkage: The coding that connects two separately coded routines.
linkage editor: A program that produces a load module by changing object modules
into a form acceptable to fetch, combining object modules and load modules into a
single new load module, resolving symbolic cross references among them, replacing,
deleting, and adding control sections automatically on request, and providing overlay
facilities for modules requesting them.
load: In programming, to enter instructions or data into storage or working registers.
In DOSIVS, to brir>9 a program phase from a core image library into virtual storage
for execution.
load module: The output of the linkage editor; a program in a form suitable for
loading into main storage for execution.
locate
mode: A way of providing data by pointing to its location instead of moving it.
logic module: The logical IOCS routine that provides an interface between a processing
program and physical IOCS.
logical rerord: A record that is defined in terms of the information it contains rather
than by its physical traits .
• loop: A sequence of instructions that is executed repeatedly until a terminal can·
dition prevails.
LSERV (label cylinder display): A program that tormats a listing of the label cylinder
located on SYSRES.
m
machine check analysis and recovery: 1. A feature that checks the severity of a CPU
hardware failure and attempts to recover from the interrupt. Abbreviated MCAR. 2. In
S/370 Mod 168 MCAR designates Maintenance Control Address Register.
machine check interrupt: The interrupt that occurs if the CPU fails to operate.
macro instruction: The macro instruction statement, the corresponding macro in·
struction definition, the resulting assembler language statements, and the machine
language instructions and other data produced from the assembler language statements;
loosely, anyone of these representations of a machine language instruction secuence.
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