IF If the specified expression evaluates to TRUE, then the following statement is executed. If the expression evaluates to FALSE,
then the following statement is skipped.
ON ON is a global condition function. During the execution of a JOB which includes ON statements, the test in the ON statement
is performed after every step.
OPTION Changes job control options for the duration of the job.
NOLOG Stops the listing of job control commands and statements that occur within the scope of the NOLOG.
PAUSE Halts execution and waits for a reply from the operator.
PROC The first statement in a cataloged procedure.
PWR Power commands are not supported within the JCL stream.
RESET Resets temporary LU assignments back to defaults.