IBM 3741 Operator's Manual page 219

Altering Programs on a Disk
1. Insert the program disk.
2.
Press FUNCT SEL lower and SEARCH ADDRESS.
3.
Key the 5-digit program address.
4. Press REC ADV (program description record appears
on the screen).
5.
Press REC ADV to get to the program to be altered.
6. Alter the program.
7. Press REC ADV.
8. Press FUNCT SEL lower and RETURN TO INDEX.
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