EDIT Line commands- Inserting Lines

I	Insert one line following this line.
In	Insert n lines following this line.

Type I5 on the line as follows:
 

XX00       M0001.D00.TEST.JCL(TESTJCL1) - 03.10           Columns 00001 00072 Command ===>                                                  Scroll ===> CSR  ****** ***************************** Top of Data ****************************** 000001 //DWJ030C0 EXEC PGM=TESTPGM1                                            i50002 //MINPUT  DD DSN=M0001.TESTFILE.MASTER2,DISP=(OLD,CATLG,CATLG),        000003 //           DCB=(LRECL=80,RECFM=FB,BLKSIZE=)                           000004 //SYSIN   DD *

Hit Enter and see that 5 blank lines are inserted.

XX00       M0001.D00.TEST.JCL(TESTJCL1) - 03.10           Columns 00001 00072 Command ===>                                                  Scroll ===> CSR  ****** ***************************** Top of Data ****************************** 000001 //DWJ030C0 EXEC PGM=TESTPGM1                                            000002 //MINPUT  DD DSN=M0001.TESTFILE.MASTER2,DISP=(OLD,CATLG,CATLG),        ''''''                                                                          ''''''                                                                         ''''''                                                                         ''''''                                                                          ''''''