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my @a="a".."c";
my @b=1..3;
...
a 2 3
a 3 4
a b 4

      iterator
           A special programming gizmo that keeps track of where you a
+re in
           something that you’re trying to iterate over.  The "foreach
+" loop
           in Perl contains an iterator; so does a hash, allowing you 
+to each
           through it.