IBM 3741 Data Station Reference Manual page 54

The third record requires program number 3.
Record 3
( DATA .......
191~ATA
..................
8°1
A three is keyed into this posi-
tion (20) to indicate that
program number 3 was used
to control the format of this
data record.
This process continues until all data records have been
keyed. Position 20 in the data record identifies the
program that was used to control the format of each
record.
After all data has been keyed, assume that an offline field
totals operation will be performed. Since each record in
the data set has a position 20 that identifies the program
under which data was keyed for the record, this informa-
tion can be used in writing control statements required to
process the job in offline field totals mode.
48
The control statement would be:
<1020W1 ; 2020W2 ; 3020W3.
'--'v-"~~
~~
t
This control state- This control state- This control state-
ment will select ment will select ment will select
program number program number program number
1 if position 20 2 if position 20 3 if position 20
in the data record in the data record
in the data record
has a one (posi-
has a two (posi- has a three (posi-
tion 20 will have tion 20 will have tion 20 will have
a one if program a two if program
a three if program
number 1 was number 2 was number 3 was
used to control used to control used to control
the format of the the format of the the format of the
record in enter record in enter record in enter
mode). mode).
mode).
If the preceding technique can be implemented, it will
assist you in using offline field totals mode.