I can't seem to find a way to access the 10 itemdata variables on the first page of the item editor. The ones that contain shield block flags and miscellaneous information for lots of different items.
Is there really no way to access these? What the heck is the reasoning behind that? Please tell me I'm missing something, because a world in which I can access the "But Not Above" field but not shield block flags is not a world I want to live in.