I've done some major improvements to the item and set description windows. Charms now show exactly what they do, and items show much more information about their set if they're in one. Also, information about the set itself can now be viewed in a similar manner to items.
Those of you who have already been playing with the sets probably noticed some of the bugs. I believe I've now squashed all of the set related bugs however. The number of sets has also doubled (to a total of 6).