22. The computer system as recited in claim 20 wherein the means for defining at least one ordering value for each character comprises means controlled by the user for changing the ordering value associated with each character depending on a desired comparison result.
20. The computer system as recited in claim 13 wherein the means for performing a comparison of the retrieved ordering values comprises means responsive to the first and second retrieved characters for converting each of the first and second retrieved characters into a UNICODE equivalent and means for comparing the UNICODE equivalents.