264 IBM VMj370 eMS User's Guide

Part 3. Learning to Use EXEC
In previous sections, the CMS EXEC facilities were described in general
terms to acquaint you with the expressions used in EXEC files and the basic way that EXECs function. Also, examples of EXEC procedures have
appeared throughout this publication. You should be familiar at least
with the material in "Introduction to the EXEC Processor" before you
attempt to use the information in Part 3. "Section 14. Building EXEC Procedures" describes the EXEC facilities
in detail, with examples of techniques you may find useful as you learn
about EXEC and develop your own EXEC procedures. Special considerations for using CMS commands in EXECs and modifying CMS command functions using EXEC procedures are described in "Section
15. Using EXECs With CMS Commands." "Section 16. Refining Your EXEC Procedures" lists several techniques
you can use to make your EXEC files easier to use and provides some
hints on debugging EXEC procedures.
If you are a frequent user of the CMS editor, then you may be
interested in "Section 17. Writing Edit Macros," which describes how to
create your own EDIT subcommands using EXEC procedures. Part 3. Learning to Use EXEC 265