19. The method of claim 11 , wherein the transforming includes subjecting the at least one rule of the rules set to a condition.
19. The method of claim 11 , wherein the transforming includes subjecting the at least one rule of the rules set to a condition. 21. The method of claim 19 , wherein the condition is any one of a set of: selection of a rule of the rules set by a user; and selection of a rule from a state of the abstract syntax tree.