2. The method of claim 1 comprising allowing the compact mathematical expression to be altered.
2. The method of claim 1 comprising allowing the compact mathematical expression to be altered. 4. The method of claim 2 , wherein allowing the compact mathematical expression to be altered comprises receiving inputs from at least one of: adding a word to the mathematical expression, deleting a word from the mathematical expression, making a common word in the mathematical expression optional; and making an optional word in the mathematical expression common.