7. A computer implemented method according to claim 2 wherein said plurality of document element classes includes one or more of at least one preferential requirement class, at least one exception requirement class, or a sequential requirement class.
7. A computer implemented method according to claim 2 wherein said plurality of document element classes includes one or more of at least one preferential requirement class, at least one exception requirement class, or a sequential requirement class. 10. A computer implemented method according to claim 7 wherein said at least one preferential requirement class includes a leading preferential requirement class and a trailing preferential requirement class, wherein each document element within said leading preferential requirement class and said trailing preferential requirement class is a word or phrase indicative of the word “prefer”.