For program described files, entries on input specifications are divided
into the following categories:
- Record identification entries (positions 7 through 46), which describe
the input record and its relationship to other records in the file.
Figure 1. Program Described Record
Layout*.. 1 ...+... 2 ...+... 3 ...+... 4 ...+... 5 ...+... 6 ...+... 7 ...+... 8 ...+... 9 ...+... 10
IFilename++SqNORiPos1+NCCPos2+NCCPos3+NCC..................................Comments++++++++++++
I.........And..RiPos1+NCCPos2+NCCPos3+NCC..................................Comments++++++++++++
- Field description entries (positions 31 through 74), which describe the
fields in the records. Each field is described on a separate line, below
its corresponding record identification entry.
Figure 2. Program Described Field
Layout*.. 1 ...+... 2 ...+... 3 ...+... 4 ...+... 5 ...+... 6 ...+... 7 ...+... 8 ...+... 9 ...+... 10
I........................Fmt+SPFrom+To+++DcField+++++++++L1M1FrPlMnZr......Comments++++++++++++