HP RPG/XL Programmer's Guide (30318-90001)

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record does not exist, a new record is added for that source code.
The update program in Figure 4-6 is the same as that shown for READ/EXCPT
in Figure 4-3. Comparing these programs should help to clarify the
differences between READ/EXCPT and DSPLY.
Figure 4-6. Using DSPLY to Update the M-SOURCE Data Set