In this example, an FCB module is defined that uses ISO paper sizes, replacing the IBM-supplied module named STD3. This must be done before the dump-formatting routines that print high-density dumps can print them at 8 lines per inch on that printer.

  //FCBMOD5  JOB  ...
  //STEP1    EXEC PGM=IEBIMAGE
  //SYSUT1   DD  DSNAME=SYS1.IMAGELIB,DISP=OLD
  //SYSPRINT DD  SYSOUT=A
  //SYSIN    DD  *
      FCB  CH1=1,CH12=88,LPI=(8,88),SIZE=120
      NAME STD3(R)
  /*

The control statements are discussed below:

• The SYSUT1 DD statement includes DISP=OLD to ensure that no other job can modify the data set while this job is executing.
• CH1=1 specifies channel 1 code for printable line 1; CH12=88 specifies channel 12 code for line 88.
• LPI=(8,88) specifies that all 88 printable lines of the form are to be at a vertical spacing of 8 lines per inch.
• SIZE=120 specifies that the length of the form is 120 tenths of an inch, or 12 inches, which is the longest ISO paper size.
• The name of the new FCB module is STD3; it is to replace the existing module of that same name on SYS1.IMAGELIB.