This is a standalone script developed by sun that only concentrates on
formatting code and the style review.

This is an alternative approach to the coder module.  Having two different
modules with different approaches is, in some ways an advantage, since each
becomes - in effect - a unit test upon the other. This is a great way for them
to both improve, and maintain accuracy in what is a very detail oriented area!

See http://drupal.org/node/126938.