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Range Operators
Binary ".." is the range operator, which is really two different operators depending
on the context. In list context, it returns a list of values counting (up by ones)
from the left value to the right value. If the left value is greater than the right
value then it returns the empty list.

Always code as if the guy who ends up maintaining your code will be a violent psychopath who knows where you live. -- Damian Conway in "Perl Best Practices"
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