Ocawa is designed in such a way as to make possible the easy inclusion of new rules, or the removal of rules already present. In this way new rule-sets can effectively be created.
To avoid the complexity of the expert system's syntax, a user-friendly rule-description interface, using a language based on XML is available: OKWML. Thus it is easy to customise your web quality control system with rules that are specific to your environment or business.
Some examples of this include: