This entry must be blank if the LIKEFILE keyword is
specified. The File Organization of the parent file is used.
- Entry
- Explanation
- Blank
- The program-described file is processed without
keys, or the file is externally described.
- I
- Indexed file (valid only for program-described
files).
- T
- Record address file that contains relative-record
numbers (valid only for program-described files).
Note: 
Record address files are not supported
in free-form file definitions

Use position 35 to identify the organization of program described
files.