1. A method for comparing text portions, comprising the steps of: (1) indexing a first selected non-predefined text portion to generate first index information; (2) indexing a second selected non-predefined text portion to generate second index information; and (3) comparing said first and second index information generated in steps (1) and (2).
4. The method of claim 1, wherein step (1) results in generating a first index table, and step (2) results in generating a second index table.