Rational Developer for System z
PL/I for Windows, Version 8.0, Programming Guide

Using REGIONAL(1) data sets

In a REGIONAL(1) data set, the region number serves as the sole identification of a particular record. The character value of the source key should represent an unsigned decimal integer that should not exceed 2147483647. If the region number exceeds this figure, it is treated as modulo 2147483648; for instance, 2147483658 is treated as 10.

Only the characters 0 through 9 and the blank character are valid in the source key; leading blanks are interpreted as zeros. Embedded blanks are not allowed in the region number; the first embedded blank, if any, terminates the region number. If more than 10 characters appear in the source key, only the rightmost 10 are used as the region number; if there are fewer than 10 characters, blanks (interpreted as zeros) are inserted on the left.


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