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The programming team can make maintenance of such difficult code much easier by
introducing refactoring. Any time a programmer encounters a twisted, tangled block of
code, she could take the time to refactor it into a much more manageable block before
attempting to do any work on it. Not only would refactoring make each individual main-
tenance task easier, but eventually a large portion of the code could be detangled so that it
is approachable and much more easily maintained. Unit tests can be used to ensure that
the behavior of the software does not change during the refactoring steps.
170 CHAPTER SEVEN
