JCL to Build the Exceptions Table - Finalist - 10.0

The figure below contains JCL to build the exceptions table.

 1  //STEP1      EXEC PGM=PBFNEXCP
 2  //STEPLIB    DD   DSN=hlq.BATCH.LOAD,DISP=SHR
 3  //SYSPRINT   DD   SYSOUT=*
 4  //SYSLOG     DD   SYSOUT=*
 5  //SYSUDUMP   DD   SYSOUT=*
 6  //EXCPIN     DD   *
    L1MANE            MAIN          RP60187  (Sample Control Card)
 7  /*
 8  //EXCPOUT    DD   DSN=&&TEMP,UNIT=SYSDA,SPACE=(TRK,(1,1),RLSE),
    //           DCB=(RECFM=FB,LRECL=80,BLKSIZE=800),DISP=(,CATLG)
    //*
 9  //ASMCC      EXEC PGM=ASMA90,
    //           PARM=(ASA,DECK,NOOBJECT,RENT,BATCH,NORLD)
 10 //SYSIN      DD   DISP=SHR,DSN=*.STEP1.EXCPOUT
 11 //SYSLIB     DD   DISP=SHR,DSN=SYS1.MACLIB
 12 //SYSUT1     DD   UNIT=(SYSDA,SEP=SYSLIB),SPACE=(CYL,(1,1))
 13 //SYSPUNCH   DD   DISP=(,PASS),UNIT=SYSDA,SPACE=(CYL,(1,1)),
    //                DCB=(BLKSIZE=3200,LRECL=80,RECFM=FB)
 14 //SYSPRINT   DD   SYSOUT=*
    //*
 15 //LKED       EXEC PGM=IEWL,AMODE=31,RMODE=ANY
    //           PARM='LIST,MAP,RENT,XREF,AMODE=24,RMODE=24'
 16 //SYSLIB     DD DUMMY
 17 //SYSUT1     DD UNIT=SYSDA,SPACE=(CYL,(1,1))
 18 //SYSPRINT   DD SYSOUT=*
 19 //SYSLMOD    DD DISP=SHR,DSN= hlq.xxxx.LOAD
 20 //SYSLIN     DD DSN=*.ASMCC.SYSPUNCH,DISP=SHR
    //           DD *
     NAME PBFNEXTB(R)
    //

A number appears to the left of each statement that contains a user-defined variable. The numbers correspond to the following descriptions.