10. The method of claim 1 , further comprising: varying a first graphical dimension or characteristic, for a display of each n-gram of the second selected list of n-grams, on a basis of the normalized difference value of the n-gram.
10. The method of claim 1 , further comprising: varying a first graphical dimension or characteristic, for a display of each n-gram of the second selected list of n-grams, on a basis of the normalized difference value of the n-gram. 13. The method of claim 10 , further comprising: varying a second graphical dimension or characteristic, for a display of each n-gram of the second selected list of n-grams, on a basis of a number of occurrences of the n-gram.