Abstract: A data processing system determines the relative frequency of occurrence in a specified file object of two specified classes of display objects and displays the contents of the file object accentuating display objects of the class having the desired relative frequency of occurrence. Relative frequency of occurrence may be determined by number of occurrences of display objects within each of the two classes or by determining a weight for each display object of each of the two classes. Relative frequency of occurrence may be computed either by separately summing or by computing the difference of either the number of objects or the weight of objects of the two classes.