3. The method of claim 2 , further comprising a step of selectively changing the key by changing at least one of the color-coding and the characteristics.
3. The method of claim 2 , further comprising a step of selectively changing the key by changing at least one of the color-coding and the characteristics. 4. The method of claim 3 , wherein the characteristics of each line are stored in a digital recording medium, and there is a step of selectively placing a plurality of the unique indicia corresponding to the multiple characteristics, based on the key, adjacent at least some of the lines of text.