29. The system of claim 28, wherein said cryptarithm means comprises means for establishing restriction sets which limit the possible digit values for those glyphs corresponding to digits.
29. The system of claim 28, wherein said cryptarithm means comprises means for establishing restriction sets which limit the possible digit values for those glyphs corresponding to digits. 31. The system of claim 29, wherein said restriction sets are established through the application of arithmetic rules and manipulations to said glyphs corresponding to digits.