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+Set::Partition takes a list or hash of elements and a list numbers that
+represent the sizes of the partitions into which the list of elements
+should be arranged.
+
+The resulting object can then be used as an iterator which returns a
+reference to an array of lists, that represents the original list arranged
+according to the given partitioning. All possible arrangements are
+returned, and the object returns undef when the entire combination space
+has been exhausted.
+
+WWW: http://search.cpan.org/dist/Set-Partition
+Author: David Landgren (http://www.landgren.net/perl/)