Syntax rules define how to code the fields and parameters on job control statements. The syntax indicates:
What the system requires.
What is optional for the specific purpose or process you are requesting.
How the parameters are to appear.
The syntax rules apply to all job control statements: JCL statements, JES2 control statements, and JES3 control statements.
You must follow the syntax rules in coding job control statements to achieve specific results. If you do not follow the rules, you may get error messages or unpredictable results. IBM does not support the use of statements or parameters to achieve results other than those stated in this publication.
Notation used to show syntax
The syntax of the job control statements and of their parameters appear in the chapters that describe the statements. The notation used in this publication for the syntax is shown in table.