Applications and subapplications can specify symbol and class reference adjustments method-by-method to effect a reduction algorithm by implementing epSymbolReferenceAdjustmentsFor:in: or epClassReferenceAdjustmentsFor:in:.

These methods allow applications to specify symbol and class references to ignore or add. In Version 4.02, the method epClassReferenceAdjustmentsFor:in: returned a list of classes. Since Version 4.5, epClassReferenceAdjustmentsFor:in: has had to return a collection of class names.