1. In a computer system which implements an object-focused workflow system and which evaluates at least one attribute by evaluating a plurality of computation rules corresponding to the at least one attribute to produce a collection of values and assigning a final value to said attribute by applying at least one combining policy to said collection of values, a method for displaying a representation of the evaluation of said at least one attribute on a display screen comprising the steps of: displaying a representation of the evaluation status of said at least one attribute, wherein said at least one attribute corresponds to an object in said object-focused workflow system; displaying a representation of the evaluation status for each of said plurality of computation rules, each of said computation rules defining whether a value should be contributed to said at least one attribute; and displaying a representation of said at least one combining policy, each of said combining policies defining a manner in which said contributed data values are combined in order to determine a final value for said at least one attribute.