An OsidRule identifies an explicit or implicit rule evaluation. An associated Rule may be available in cases where the behavior of the object can be explicitly modified using a defined rule. In many cases, an OsidObject may define specific methods to manage certain common behavioral aspects and delegate anything above and beyond what has been defined to a rule evaluation.

Rule evaluations may also require extra input data in the form of OsidConditions . getConditionRecordTypes() lists the required OsidRecords . These types may or may not be directly managed as part of this rule definition.