13. The tangible computer readable medium of claim 11 further comprising: instructions to define elective events according to a predetermined combination of attribute and enumeration values, which events are operative to invoke data processing to effect display of a message or performance of a calculation.
11. The tangible computer readable medium of claim 10 further comprising: instructions to assign an order to elements of the Include and Exclude rule components to established ordered indices; and instructions to store the rule model in reduced canonical form according to the ordered indices.