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Systems Reference Library
IBM Operating System/360
Concepts and Facilities
This publication describes the basic
concepts of Operating System/360 and guides
the programmer in the use of its various
facilities.
Operating System/360 is a comprehensive
set of language translators and service
programs, operating under the supervisory
control and coordination of an integrated
control program. It is designed for use
with Groups 30, 40, 50, 60, 62, 70, and 92
of Computing System/360. It assists the
programmer by extending the performance and
application of the computing system.
PREFACE
This publication introduces and interre- The publication is divided into two
lates all Operating System/360 control pro- parts, an introduction and survey, and a
gram facilities. It shows how these facil- detailed description. The first part con-
ities work with the language translators tains a general description of subjects of
and service programs, so the programmer can interest to all users. The second part,
better learn to use the system. It also meant for programmers, is a more thorough
directs the programmer to related Operating discussion of the same topics.
System/360 publications for specific
details.
Even though many details are expressed
in assembler language terminology, this
Many combinations of programming facili- publication is addressed to every program-
ties are possible with Operating mer who will use System/360, and familiari-
System/360. The programmer will work with ty ~ith the assembler language is not a
a particular set of these facilities, requirement.
depending on the language he uses (FORTRAN,
COBOL, Report Program Generator, Assembler,
or New Programming Language), and the modu- PREREQUISITE PUBLICATION: IBM Operating
lar programs chosen when his operating System/360: Introduction. This publication
system is generated. Although all the describes the general organization, func-
control program facilities are described tion, and application of the operating
herein, all of them may not be included in system. It also describes the other relat-
every installation. ed Operating System/360 publications.
This publication was prepared for production using an IBM computer to update
the text and to control the page and line format. Page impressions for
photo-offset printing were obtained from an IBM 1403 Printer using a special
print chain.
Copies of this and other IBM publications can be cbtained through IBM Branch
Offices.
A form for readers' comments appears at the back of this publication. It may
be mailed directly to IEM. Address any additional comments concerning this
publication to the IBM Corporation, programming Systems publications, Department
D58, PO Box 390, Poughkeepsie, N. Y. 12602