1. A method of using a computer system for addressing a plurality of levels and a plurality of units to identify relationships between user inputs corresponding to said plurality of units, the method comprising the steps of: defining in said computer system a class level having a first plurality of units, a type level having a second plurality of units, a variation level having a third plurality of units, and an element level having a fourth plurality of units; addressing by said computer system each of said first, second, third, and fourth levels, and each of said first, second, third, and fourth plurality of units with a five digit address, a first digit designating a unit in said first plurality of units in said class level, a second digit designating a unit in said second plurality of units in said type level, a third digit designating a unit in said third plurality of units in said variation level, a fourth digit designating a unit in said fourth plurality of units in said element level, and a fifth digit defining the number of units being addressed.
1. A method of using a computer system for addressing a plurality of levels and a plurality of units to identify relationships between user inputs corresponding to said plurality of units, the method comprising the steps of: defining in said computer system a class level having a first plurality of units, a type level having a second plurality of units, a variation level having a third plurality of units, and an element level having a fourth plurality of units; addressing by said computer system each of said first, second, third, and fourth levels, and each of said first, second, third, and fourth plurality of units with a five digit address, a first digit designating a unit in said first plurality of units in said class level, a second digit designating a unit in said second plurality of units in said type level, a third digit designating a unit in said third plurality of units in said variation level, a fourth digit designating a unit in said fourth plurality of units in said element level, and a fifth digit defining the number of units being addressed. 9. The method of claim 1 wherein xx'x"x'"4 defines said element level, and wherein x, x', x", and x'" are selected from the group consisting of 1, 2,3, and 4.