Passing parameters by reference instead of by value avoids the overhead of making a copy. Passing arguments via copy should only be done when it is technically mandated, as it is for example with RFC function modules.
== Noncompliant Code Example
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PERFORM subr USING a1 a2 a3 a4 a5.
== Compliant Solution
PERFORM subr CHANGING a1 a2 a3 a4 a5.
ifdef::rspecator-view[]
== Comments And Links
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include::../comments-and-links.adoc[]
endif::rspecator-view[]
