Figure 1 shows the specific steps in the
RPG IV lookahead
routine. The item numbers in the following descriptions refer to the
numbers in the figure.
- 1
- The next record for the file being processed is read. However,
if the file is a combined or update file (identified by a C or U,
respectively, in position 17 of the file description specifications),
the lookahead fields from the current record being processed is extracted.
- 2
- The lookahead fields are extracted.