Page of GC20-1819-2 As Updated April 27, 1981 by TNL SN25-0828 For 574 8-XE 1
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© Copyriqht International Business Machines Corporation 1976, 1977, 19
7 9, 1991

This publication is intended for the
general user. It contains information
describing the interactive facilities of CMS, and includes examples showing you how
to use CMS. "part 1. Understanding eMS" contains
sections that describe, in general terms,
the eMS facilities and the CMS and CP commands that you can use to control your
virtual machine. If you are an experienced
programmer who has used interactive
terminal systems before, you may be able to
refer directly the the VM/370 CMS Command Macro publication to find
specific details about' CMS commands that are summarized in this part. Otherwise,
you may need to refer to later sections of
this publication to gain a broader
background in using CMS. The topics
discussed in Part 1 are: • What It Means to Have a CMS virtual
Machine • switching
Environiients and • What You Can Do with VM/370-CMS Commands • The CMS File System • The eMS Editor • Introduction to the EXEC Processor • Using Real printers, punches, Readers
and Tapes "Part 2. program Development Using CMS" is primarily for applications programmers
who want to use CMS to develop and test os
and DOS programs under CMS. The topics
discussed in Part 2 are: • Developing OS programs Under CMS • Developing DOS Programs Under CMS • Using Access Method Services and VSAM Under CMS and CMS/DOS • How VM/370 Can Help You Debug Your programs • Using the CMS Batch Facility • programming for the CMS Environment "Part 3. Learning To
detailed information on
procedures to use with Use EXEC" creating CMS. The
Gives EXEC topics
April 1, 1981
Preface
discussed in Part 3 are: • Building EXEC Procedures • Using EXECS with CMS Commands • Refining Your EXEC Procedures • Writing Edit Macros
"Appendix A: Summary of CMS Commands"
lists the commands available in the CMS command environment.
"Appendix B: Summary of CP Commands"
lists the CP command privilege classes and
summarizes the commands available in the CP command environment.
"Appendix C: Considerations for 3270 Display Terminal Users" discusses aspects
of VM/370 and CMS that are different or
unique when you use a 3270 display
terminal. "Appendix D" Sample Terminal Sessions" show sample terminal sessions for: • USing the CMS editor and eMS file system commands • Using line-number editing with the CMS editor • Creating, assembling, and executing an OS program in CMS • Creating, assembling, and executing a DOS program in CMS/DOS • Using access method services in CMS Terminology Some of the following terms are used, for throughout this publication. • The term tIC MS/DOS" refers to th e
functions of CMS that become available
when you issue the command set dos on CMS/DOS is a part of the normal CMS system,
and is not a separate system. Users who do
not use CMS/DOS are soaetimes referred to
as OS users, since they use the os
simulation functions of CMS. Preface iii