NOTE: Do not purge any batches until the back-up tape has been prepared. 
                     
                     
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                              1. 
                              
                                 Select Mode “F” and key the Jobname “SUPER,” a comma (,) and the batch identifier “PUR157.” Then depress the Skip key twice.
                                 
                               
                            
                         
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                              2. 
                              
                                 Key the batch numbers to be purged into the $JOB 157 command.
                                 
                               
                            
                         
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                              3. 
                              
                                 Record back to record number “1.”
                                 
                               
                            
                         
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                              4. 
                              
                                 To execute the purge command string: Select Mode “T,” enter the password and then option “M.”