11. In this case a rules engine seeks to resolve the facts to fit a particular goal. 12. In addition, some rules engines support backward chaining. 13. Most rules engines function as a callable library. 14. The NMIS business rules engine classifies events on their business impact, not just the technical nature. 15. Statistics are then used in an attempt to adjust / correct the output from the rules engine . 16. Programmer Alexander G . M . Smith was in charge of software design for the rules engine . 17. KRL is part of an open-source project called KRE, for Kinetic Rules Engine , developed by Kynetx, Inc. 18. JBoss Developer Studio includes support for the most widely used Business rules engine in the market, Drools. 19. Each game is hosted by the Magic Online servers, which apply a rules engine to enforce proper play. 20. Many commercial rule engines provide the Rete algorithm, a proprietary algorithm that embodies many of the principles of Rete.