Sample JCL to run GTF as a started task is provided in member MFAGTF. Edit this JCL to customize the data set names for your installation and then copy the JCL into a system procedure library that is available when z/OS START commands are processed. Member GTFCNTL contains GTF control statements that are referenced by the sample GTF JCL procedure. The USR=(FF1,FEF,0E9) statement in this member specifies the recording of VTAM buffer trace records (FF1 and FEF) and Mainframe Access server trace records (0E9).