Reference: [http://developer.mozilla.org/en/docs/CSS_Reference CSS Reference]

[http://en.wikipedia.org/wiki/Delta_Debugging Delta debugging] is an automated approach to debugging that isolates failures systematically. Given a failing test that can be mechanically verified (including a browser crash), [http://en.wikipedia.org/wiki/Delta_Debugging delta debugging] is a way of automatically isolating the change that introduced the failure. Having a framework in place to pull builds from CVS, bisect by date and change set (using [http://en.wikipedia.org/wiki/Bonsai_CVS_code_management_system bonsai ] data -- remember, CVS doesn't have changesets!), and report results would let computers make developers more productive.