I've written a bit of code that tries to automatically update the 'STATISTICS' field of an item description. It automatically sets the standard weapon and armor features, the weight, and (on classic BG2) the 'usable by/unusable by' descriptions. The description is formatted in either EE or classic format, as appropriate.  The code can't automatically build special details like bonuses to hit against certain creatures, on-equip powers, or special abilities, but it does leave them in place fr