Rational Developer for System z
Enterprise PL/I for z/OS, Version 3.8, Language Reference Manual

Unconnected Storage

The DEFINED attribute can overlay arrays. This allows array expressions to refer to array elements in unconnected storage (array elements that are not adjacent in storage). It is possible for an array expression involving consecutive elements to refer to unconnected storage in the following case:

An array overlay-defined on another array is always assumed to be in unconnected storage.


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