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IBM 3741 Operator's Manual page 50

Data station
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End of Data (Positions 75 through 79)
If you are making a new data set label, enter the same address
as you did in positions 29 through 33 (BOE). If you are chang-
ing the data set label, enter the address of the last record entered
in the data set
plus one.
(For example, if the last record entered
was in track 10, sector 15, you'd enter 30016.)
An unexpected power outage can result in the loss of the EOD
address. Data can be recovered by reestablishing the EOD
address of the partially destroyed data set. For more information,
see
Data Recovery
in the
IBM 3741 Data Station Reference Manual,
GA21-9183.
40

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