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Required Data Set Label Fields
Record Beginning of
End of
End of
Header 1 Length Extent (BOE) Extent (EOE)
Data (EOD)
-:-:7;~~
28 01002 73026
75
30016
Note the positions in which these fields are located.
Header 1 (Positions 1 through 4)
Enter HDR1.
Record Length (Positions 23 through 27)
Enter the record length (up to 128) for the records in the data
set. The figure you enter must end in position 27. Positions
not used must be blank or 0.
Beginning of Extent (Positions 29 through 33)
Enter the five-digit address designated for the first record of
this data set. For example, if the first record is to go in track
01, sector 02, you'd enter 01002.
xxOxx
--~--
/zero\
--
--
Track
Sector
Number
Number
End of Extent (Positions 35 through 39)
Enter the five-digit address of the last position on the disk
reserved for this data set. (For example, to reserve the entire
disk for a data set, you'd enter 73026.)
39
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