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. 9. A computer implemented method according to claim 7 wherein each document element within said at least one sequential requirement class includes a word or phrase indicative of the word “then”.